Bug 2458945

Summary:	CVE-2026-40962 ffmpeg: FFmpeg: Integer overflow and out-of-bounds write via CENC subsample data [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Sandipan Roy <saroy>
Component:	ffmpeg	Assignee:	Multimedia SIG <multimedia-sig>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	epel10	CC:	asn, dominik, multimedia-sig, ngompa13, philip.wyett
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["a2a860f5-d40d-47fa-80bf-e288b6b88419"]}
Fixed In Version:	ffmpeg-5.1.9-1.el9 ffmpeg-7.1.4-1.el10_3	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-06-02 00:27:51 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:
Bug Blocks:	2458862

Description Sandipan Roy 2026-04-16 14:19:21 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Dominik 'Rathann' Mierzejewski 2026-05-21 20:31:24 UTC

This is fixed in 7.1.4: https://github.com/FFmpeg/FFmpeg/commit/78c944bdb170d8dcece166115d92b45379b040f4
and in 5.1.9: https://github.com/FFmpeg/FFmpeg/commit/b07fdedf940ded686ffe4e9fb221170a11ff0478

Comment 2 Fedora Update System 2026-05-22 07:55:57 UTC

FEDORA-EPEL-2026-7e25a1d2ec (ffmpeg-5.1.9-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-7e25a1d2ec

Comment 3 Fedora Update System 2026-05-22 08:03:05 UTC

FEDORA-EPEL-2026-8794c31f20 (ffmpeg-7.1.4-1.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-8794c31f20

Comment 4 Fedora Update System 2026-05-23 16:08:11 UTC

FEDORA-EPEL-2026-7e25a1d2ec has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-7e25a1d2ec

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-05-23 16:28:21 UTC

FEDORA-EPEL-2026-8794c31f20 has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-8794c31f20

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-06-02 00:27:51 UTC

FEDORA-EPEL-2026-7e25a1d2ec (ffmpeg-5.1.9-1.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2026-06-02 00:52:02 UTC

FEDORA-EPEL-2026-8794c31f20 (ffmpeg-7.1.4-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.