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Bug 886497 (CVE-2022-3109) - <media-video/ffmpeg-4.4.4, <media-video/ffmpeg-5.1: null pointer dereference
Summary: <media-video/ffmpeg-4.4.4, <media-video/ffmpeg-5.1: null pointer dereference
Status: CONFIRMED
Alias: CVE-2022-3109
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal
Assignee: Gentoo Security
URL: https://bugzilla.redhat.com/show_bug....
Whiteboard: A3 [glsa?]
Keywords:
Depends on:
Blocks:
 
Reported: 2022-12-17 21:30 UTC by John Helmert III
Modified: 2025-03-11 01:50 UTC (History)
4 users (show)

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Runtime testing required: ---

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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-12-17 21:30:57 UTC 
CVE-2022-3109 (https://github.com/FFmpeg/FFmpeg/commit/656cb0450aeb73b25d7d26980af342b37ac4c568):

An issue was discovered in the FFmpeg through 3.0. vp3_decode_frame in libavcodec/vp3.c lacks check of the return value of av_malloc() and will cause the null pointer dereference, impacting confidentiality and availability.

Bit weird to refer to 3.0 when the issue was fixed in 5.1. Not sure
how a crash could affect confidentiality, either. Doesn't seem to have
been backported.
Comment 1 Pacho Ramos gentoo-dev 2023-05-02 13:59:40 UTC 
Ubuntu should have backported patches:
https://ubuntu.com/security/notices/USN-5958-1

But I cannot locate them... I guess they are "closed" behind that ESM stuff? :S
Comment 2 Ionen Wolkens gentoo-dev 2025-03-11 01:50:44 UTC 
For the 4.4.x branch, looks like this been fixed in [1] since 4.4.4, and our oldest version is 4.4.5.

[1] https://github.com/FFmpeg/FFmpeg/commit/4d82b7bac42c9d35d4f9f145a85e6cbc1fe914f2