| Name | CVE-2026-75147 |
| Description | FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read. |
| 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) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ffmpeg (PTS) | bookworm, bookworm (security) | 7:5.1.9-0+deb12u1 | fixed |
| trixie (security), trixie | 7:7.1.5-0+deb13u1 | fixed | |
| forky, sid | 7:8.1.2-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ffmpeg | source | bullseye | (not affected) | |||
| ffmpeg | source | bookworm | (not affected) | |||
| ffmpeg | source | trixie | (not affected) | |||
| ffmpeg | source | (unstable) | (unfixed) |
[trixie] - ffmpeg <not-affected> (Vulnerable code not present)
[bookworm] - ffmpeg <not-affected> (Vulnerable code not present)
[bullseye] - ffmpeg <not-affected> (Vulnerable code not present)
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24096
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/983dae9c19f46c87d597598c0fd2f2fcee0ad2f8 (master)
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/f175bd50821f9adcded3acacc6b8e04037a92715 (n9.0.1)
Introduced by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/330c8f8b936de66d08d5c462845e7fdcbc637b75 (n8.0)