CVE-2025-62609: MLX has Wild Pointer Dereference in load_gguf()

November 21, 2025 (updated June 6, 2026)

Segmentation fault in mlx::core::load_gguf() when loading malicious GGUF files. Untrusted pointer from external gguflib library is dereferenced without validation, causing application crash.

Environment:

OS: Ubuntu 20.04.6 LTS
Compiler: Clang 19.1.7

References

github.com/advisories/GHSA-j842-xgm4-wf88
github.com/ml-explore/mlx/security/advisories/GHSA-j842-xgm4-wf88
github.com/pypa/advisory-database/tree/main/vulns/mlx/PYSEC-2025-139.yaml
nvd.nist.gov/vuln/detail/CVE-2025-62609

Code Behaviors & Features

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