Bug 2510589

Summary:	CVE-2026-66039 ffmpeg: FFmpeg: Arbitrary code execution via crafted CAF file [fedora-43]
Product:	[Fedora] Fedora	Reporter:	Marian Rehak <mrehak>
Component:	ffmpeg	Assignee:	Multimedia SIG <multimedia-sig>
Status:	ASSIGNED ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	43	CC:	asn, development.group, dominik, multimedia-sig, ngompa13
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["5c18141e-7d72-48bf-b327-f3f3c5d13fa0"]}
Fixed In Version:	ffmpeg-9.0.1-1.fc46,ffmpeg-9.0.1-4.fc45,ffmpeg-8.1.3-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2506937

Description Marian Rehak 2026-08-03 10:08:52 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.

FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerability in the MACE6 audio decoder that allows attackers to corrupt heap memory by supplying a crafted CAF file with a malicious bytes_per_packet value. Attackers can craft a CAF file with oversized bytes_per_packet and frames_per_packet values in the desc chunk to trigger an integer overflow in mace_decode_frame() during output sample count computation, resulting in an undersized buffer allocation and heap out-of-bounds write that could enable code execution.

Comment 1 Aoife Moloney 2026-08-17 15:45:33 UTC

This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.

Comment 2 Dominik 'Rathann' Mierzejewski 2026-09-28 11:51:56 UTC

Fixed in:
9.0:   https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/947c57d9e68800dd4d39f110140f8f6c34cedf80
8.1.3: https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/228fd8f0caca7d698ec8e06497ac6e2df436dadc

NOT fixed in 7.1.x.

Comment 3 Fedora Update System 2026-09-28 11:52:31 UTC

FEDORA-2026-3e109a0c85 (ffmpeg-8.1.3-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3e109a0c85

Comment 4 Fedora Update System 2026-09-29 02:11:05 UTC

FEDORA-2026-3e109a0c85 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3e109a0c85`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3e109a0c85

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

Comment 5 Fedora Update System 2026-10-01 01:12:02 UTC

FEDORA-2026-3e109a0c85 (ffmpeg-8.1.3-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.