bz2.BZ2Decompressor reuse after error can cause a stack buffer overflow
bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.
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beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-9669US | — | — | ||
bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could… | ||||
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Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- http://www.openwall.com/lists/oss-security/2026/06/08/17WEB
- https://github.com/python/cpython/commit/157a5df8cb5d82b33f918a7489e72ce95ceb12b6WEB
- https://github.com/python/cpython/commit/1ba6135eae75ad8413413caeeedb56ae72320636WEB
- https://github.com/python/cpython/commit/5755d0f083949ff3c5bf3a37e673e24e306b036eWEB
- https://github.com/python/cpython/commit/619a12b2e545391dc436b3af79dda22337382a6fWEB
- https://github.com/python/cpython/commit/938ec030e90c5e53f1faac6fab1643f14e4f4a79WEB
- https://github.com/python/cpython/commit/991e6cf86496718c4ef00b362d640e00cb5c85b2WEB
- https://github.com/python/cpython/commit/d3ca26983dfbccdf609f24ff5877dc3118e4702dWEB
scry
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