CVE-2026-9669 — 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 cou…
Published: 2026-06-08 · CVSS: 8.2 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7