This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-18393 →

DEBIAN-CVE-2026-18393

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 da...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:8.1.1-1"}]}]

References

advisory security-tracker.debian.org