| Name | CVE-2026-40962 |
| Description | FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6268-1, DSA-6276-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ffmpeg (PTS) | bullseye | 7:4.3.7-0+deb11u1 | vulnerable |
| bullseye (security) | 7:4.3.9-0+deb11u2 | vulnerable |
| bookworm | 7:5.1.8-0+deb12u1 | vulnerable |
| bookworm (security) | 7:5.1.9-0+deb12u1 | fixed |
| trixie | 7:7.1.3-0+deb13u1 | vulnerable |
| trixie (security) | 7:7.1.4-0+deb13u1 | fixed |
| forky, sid | 7:8.1.1-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - ffmpeg <postponed> (minor issue)
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e392fb8c9c3949d975531d2b23c645d2465a7ebc (n8.1)
Fixed by: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/78c944bdb170d8dcece166115d92b45379b040f4 (n7.1.4)
Fixed by: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/b07fdedf940ded686ffe4e9fb221170a11ff0478 (n5.1.9)