| Name | CVE-2026-18393 |
| Description | A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond the bounds of a heap-allocated buffer when processing crafted TDSC cursor data. A remote attacker could exploit this by supplying a specially crafted video file, potentially leading to a denial of service or arbitrary code execution. |
| 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) | bullseye | 7:4.3.7-0+deb11u1 | vulnerable |
| bullseye (security) | 7:4.3.9-0+deb11u2 | vulnerable |
| 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 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ffmpeg | source | (unstable) | 7:8.1.2-1 | | | |
Notes
[trixie] - ffmpeg <postponed> (Wait until fixed in 7.1.x upstream branch)
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/242ff799c75f20bade946314c8d741d0887ee11c (n9.0)
Fixed by: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/031fae5c41e6200d3d9b593339be724857b2aacd (n8.1.1)