CVE-2026-75144

Name	CVE-2026-75144
Description	FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ffmpeg (PTS)	bookworm, bookworm (security)	7:5.1.9-0+deb12u1	vulnerable
	trixie (security), trixie	7:7.1.5-0+deb13u1	vulnerable
	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	(unstable)	(unfixed)

Notes

[trixie] - ffmpeg <postponed> (Wait until fixed in 7.1.x upstream branch)
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cdeb3c4e7f1f8566d846b9b451e01c376398818 (master)
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1afd5c3ddafda4209e0881cd30684b919e99de7c (n9.0.1)