BIT-PYTHON-2026-6100 Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure

Use-after-free UAF was possible in the lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile when a memory allocation fails with a MemoryError and the decompression instance is re-used. This scenario can be triggered if the process is under memory pressure. The fix cleans up the dangling...

Important: python3

Issue Overview: Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open" API could have commands injected into the underlying shell. See CVE-2026-4519 for details. CVE-2026-4786 Use-after-free UAF wa...

CVE-2026-6100 Use-after-free in lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile after re-use under memory pressure

Use-after-free UAF was possible in the lzma.LZMADecompressor, bz2.BZ2Decompressor, and gzip.GzipFile when a memory allocation fails with a MemoryError and the decompression instance is re-used. This scenario can be triggered if the process is under memory pressure. The fix cleans up the dangling...

PT-2025-45899

BZ2 decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors...

SUSE CVE-2010-0405

Integer overflow in the BZ2decompress function in decompress.c in bzip2 and libbzip2 before 1.0.6 allows context-dependent attackers to cause a denial of service application crash or possibly execute arbitrary code via a crafted compressed file...

PT-2022-36976

Name of the Vulnerable Software and Affected Versions No specific software or versions are mentioned in the provided description. Description The issue is related to a stack-buffer-overflow read error. The crash state indicates involvement of the BZ2 decompress and BZ2 bzDecompress functions, as...

PT-2020-22545

Name of the Vulnerable Software and Affected Versions No specific software or versions are mentioned in the provided description. Description The issue is related to a crash type of UNKNOWN READ. The crash state involves several function calls, including BZ2 decompress, BZ2 bzDecompress, and ft...