USN-7871-1: FFmpeg vulnerability

Publication date

16 November 2025

Overview

FFmpeg could be made to crash if it opened a specially crafted file.


Packages

  • ffmpeg - Tools for transcoding, streaming and playing of multimedia files

Details

It was discovered that FFmpeg incorrectly handled memory allocation in the
ALS audio decoder. If a user was tricked into loading a crafted media file,
a remote attacker could possibly use this issue to make FFmpeg crash,
resulting in a denial of service.

It was discovered that FFmpeg incorrectly handled memory allocation in the
ALS audio decoder. If a user was tricked into loading a crafted media file,
a remote attacker could possibly use this issue to make FFmpeg crash,
resulting in a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
25.10 questing ffmpeg –  7:7.1.1-1ubuntu4.1
libavcodec61 –  7:7.1.1-1ubuntu4.1
libavformat61 –  7:7.1.1-1ubuntu4.1
25.04 plucky ffmpeg –  7:7.1.1-1ubuntu1.3
libavcodec61 –  7:7.1.1-1ubuntu1.3
libavformat61 –  7:7.1.1-1ubuntu1.3

Reduce your security exposure

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