Stack-based Buffer Overflow Affecting ffmpeg-9.0 package, versions <9.0.1-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.2% (9th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FFMPEG90-20265654
  • published30 Sept 2026
  • disclosed19 Aug 2026

Introduced: 19 Aug 2026

CVE-2026-75142  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade Chainguard ffmpeg-9.0 to version 9.0.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg-9.0 package and not the ffmpeg-9.0 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.

CVSS Base Scores

version 3.1