A FFmpeg regression update has been released for Ubuntu Linux 18.04 LTS., 20.04 LTS, and 22.04 LTS.

[USN-6449-2] FFmpeg regression

==========================================================================
Ubuntu Security Notice USN-6449-2
November 15, 2023

ffmpeg regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS (Available with Ubuntu Pro)
- Ubuntu 20.04 LTS (Available with Ubuntu Pro)
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

USN-6449-1 introduced a regression in FFmpeg

Software Description:
- ffmpeg: Tools for transcoding, streaming and playing of multimedia files

Details:

USN-6449-1 fixed vulnerabilities in FFmpeg. Unfortunately that update
could introduce a regression in tools using an FFmpeg library, like VLC.

This updated fixes the problem. We apologize for the inconvenience.

Original advisory details:

It was discovered that FFmpeg incorrectly managed memory resulting
in a memory leak. An attacker could possibly use this issue to cause
a denial of service via application crash. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-22038)

It was discovered that FFmpeg incorrectly handled certain input files,
leading to an integer overflow. An attacker could possibly use this issue
to cause a denial of service via application crash. This issue only
affected Ubuntu 20.04 LTS. (CVE-2020-20898, CVE-2021-38090,
CVE-2021-38091, CVE-2021-38092, CVE-2021-38093, CVE-2021-38094)

It was discovered that FFmpeg incorrectly managed memory, resulting in
a memory leak. If a user or automated system were tricked into
processing a specially crafted input file, a remote attacker could
possibly use this issue to cause a denial of service, or execute
arbitrary code. (CVE-2022-48434)

Update instructions:

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

Ubuntu 22.04 LTS (Available with Ubuntu Pro):
ffmpeg 7:4.4.2-0ubuntu0.22.04.1+esm3
libavcodec-extra 7:4.4.2-0ubuntu0.22.04.1+esm3
libavcodec-extra58 7:4.4.2-0ubuntu0.22.04.1+esm3
libavcodec58 7:4.4.2-0ubuntu0.22.04.1+esm3
libavdevice58 7:4.4.2-0ubuntu0.22.04.1+esm3
libavfilter-extra 7:4.4.2-0ubuntu0.22.04.1+esm3
libavfilter-extra7 7:4.4.2-0ubuntu0.22.04.1+esm3
libavfilter7 7:4.4.2-0ubuntu0.22.04.1+esm3
libavformat-extra 7:4.4.2-0ubuntu0.22.04.1+esm3
libavformat-extra58 7:4.4.2-0ubuntu0.22.04.1+esm3
libavformat58 7:4.4.2-0ubuntu0.22.04.1+esm3
libavutil56 7:4.4.2-0ubuntu0.22.04.1+esm3
libpostproc55 7:4.4.2-0ubuntu0.22.04.1+esm3
libswresample3 7:4.4.2-0ubuntu0.22.04.1+esm3
libswscale5 7:4.4.2-0ubuntu0.22.04.1+esm3

Ubuntu 20.04 LTS (Available with Ubuntu Pro):
ffmpeg 7:4.2.7-0ubuntu0.1+esm4
libavcodec-extra 7:4.2.7-0ubuntu0.1+esm4
libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm4
libavcodec58 7:4.2.7-0ubuntu0.1+esm4
libavdevice58 7:4.2.7-0ubuntu0.1+esm4
libavfilter-extra 7:4.2.7-0ubuntu0.1+esm4
libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm4
libavfilter7 7:4.2.7-0ubuntu0.1+esm4
libavformat58 7:4.2.7-0ubuntu0.1+esm4
libavresample4 7:4.2.7-0ubuntu0.1+esm4
libavutil-dev 7:4.2.7-0ubuntu0.1+esm4
libavutil56 7:4.2.7-0ubuntu0.1+esm4
libpostproc55 7:4.2.7-0ubuntu0.1+esm4
libswresample3 7:4.2.7-0ubuntu0.1+esm4
libswscale5 7:4.2.7-0ubuntu0.1+esm4

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
ffmpeg 7:3.4.11-0ubuntu0.1+esm4
libavcodec-extra 7:3.4.11-0ubuntu0.1+esm4
libavcodec-extra57 7:3.4.11-0ubuntu0.1+esm4
libavcodec57 7:3.4.11-0ubuntu0.1+esm4
libavdevice-dev 7:3.4.11-0ubuntu0.1+esm4
libavdevice57 7:3.4.11-0ubuntu0.1+esm4
libavfilter-dev 7:3.4.11-0ubuntu0.1+esm4
libavfilter-extra 7:3.4.11-0ubuntu0.1+esm4
libavfilter-extra6 7:3.4.11-0ubuntu0.1+esm4
libavfilter6 7:3.4.11-0ubuntu0.1+esm4
libavformat57 7:3.4.11-0ubuntu0.1+esm4
libavresample3 7:3.4.11-0ubuntu0.1+esm4
libavutil-dev 7:3.4.11-0ubuntu0.1+esm4
libavutil55 7:3.4.11-0ubuntu0.1+esm4
libpostproc54 7:3.4.11-0ubuntu0.1+esm4
libswresample2 7:3.4.11-0ubuntu0.1+esm4
libswscale4 7:3.4.11-0ubuntu0.1+esm4

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

References:
https://ubuntu.com/security/notices/USN-6449-2
https://ubuntu.com/security/notices/USN-6449-1
https://launchpad.net/bugs/2042743