Bug 2182839 (CVE-2022-48434)

Summary:	CVE-2022-48434 ffmpeg: Use after free in libavcodec/pthread_frame.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-03-29 23:15:53 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2182843, 2182840, 2182841, 2182842, 2182844, 2182845, 2182846, 2182847, 2182848
Bug Blocks:

Description Pedro Sampaio 2023-03-29 19:18:34 UTC

libavcodec/pthread_frame.c in FFmpeg before 5.1.2, as used in VLC and other products, leaves stale hwaccel state in worker threads, which allows attackers to trigger a use-after-free and execute arbitrary code in some circumstances (e.g., hardware re-initialization upon a mid-video SPS change when Direct3D11 is used).

https://wrv.github.io/h26forge.pdf
https://news.ycombinator.com/item?id=35356201
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/cc867f2c09d2b69cee8a0eccd62aff002cbbfe11

Comment 1 Pedro Sampaio 2023-03-29 19:18:47 UTC

Created ffmpeg tracking bugs for this issue:

Affects: fedora-all [bug 2182840]

Comment 2 Pedro Sampaio 2023-03-29 19:20:09 UTC

Created chromium tracking bugs for this issue:

Affects: epel-all [bug 2182841]


Created ffmpegthumbs tracking bugs for this issue:

Affects: fedora-all [bug 2182844]


Created nv-codec-headers tracking bugs for this issue:

Affects: epel-all [bug 2182842]
Affects: fedora-all [bug 2182845]


Created python-mne tracking bugs for this issue:

Affects: fedora-all [bug 2182846]


Created qt5-qtwebengine tracking bugs for this issue:

Affects: epel-all [bug 2182843]
Affects: fedora-all [bug 2182847]


Created qt6-qtwebengine tracking bugs for this issue:

Affects: fedora-all [bug 2182848]

Comment 3 Product Security DevOps Team 2023-03-29 23:15:51 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.