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Joblib dtype metadata crash PoC

This repository contains a minimal proof of concept for a malformed .joblib artifact that crashes joblib.load() by changing one dtype metadata byte from f8 to O8.

Files

array_float64.joblib: benign baseline numeric Joblib array.
dtype_o8.joblib: same size as baseline, one-byte dtype metadata mutation.
reproduce_dtype_o8.py: subprocess-based reproducer.
poc.zip: packaged PoC artifact.
sha256.txt: checksums.

Expected behavior

Malformed dtype metadata should raise a Python exception.

Actual behavior

Normal joblib.load("dtype_o8.joblib") crashes the Python process natively. The artifact contains no command-execution payload.

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