CVE-2026-125266 | BDVDB-2026-402596 Detail
FFmpegFFmpeg
Description#
FFmpeg through 9.0.2 contains an uninitialized stack memory disclosure vulnerability in old_codec23() of libavcodec/sanm.c that leaks stack bytes into decoded frames. Attackers can supply a crafted LucasArts SMUSH/SANM animation using codec 23 with an inline table to expose decoder process stack memory in output video.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: local.
Weaknesses#
- CWE-908 Use of Uninitialized Resource
References#
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25718
- https://github.com/FFmpeg/FFmpeg/commit/d42cb1925987cc27899441ce39fa7bd2647dc72e
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/sanm.c#L799
- https://github.com/FFmpeg/FFmpeg
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-stack-memory-disclosure-via-sanm-codec-23
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.