Use After Free Affecting ffmpeg package, versions <7:8.1.1-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.25% (16th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FFMPEG-17385987
  • published20 Jun 2026
  • disclosed19 Jun 2026

Introduced: 19 Jun 2026

CVE-2026-12706  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:unstable ffmpeg to version 7:8.1.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).

CVSS Base Scores

version 3.1