CVE-2026-125232

Description

FFmpeg through 9.0.2 contains a division by zero vulnerability in estimate_motion_b() in libavcodec/motion_est.c, caused by frame timestamp distances truncated to 16 bits. Attackers can supply input with timestamp gaps that are multiples of 65536, crashing MPEG-4 Part 2 or MPEG-1/2 B-frame encoding with SIGFPE.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24552 ↗
• https://github.com/FFmpeg/FFmpeg/commit/bf0a2e4680df92d8de6514090d350152eb7845b8 ↗
• https://github.com/FFmpeg/FFmpeg/commit/16d19ccbce802634662a9bf18a5679cf27da2848 ↗
• https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/motion_est.c#L1153 ↗
• https://github.com/FFmpeg/FFmpeg ↗
• https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-division-by-zero-in-b-frame-motion-estimation ↗