Bug 2510589 - CVE-2026-66039 ffmpeg: FFmpeg: Arbitrary code execution via crafted CAF file [fedora-43]
Summary: CVE-2026-66039 ffmpeg: FFmpeg: Arbitrary code execution via crafted CAF file ...
Keywords:
Status: ASSIGNED
Alias: None
Product: Fedora
Classification: Fedora
Component: ffmpeg
Version: 43
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Multimedia SIG
QA Contact:
URL:
Whiteboard: {"flaws": ["5c18141e-7d72-48bf-b327-f...
Depends On:
Blocks: CVE-2026-66039
TreeView+ depends on / blocked
 
Reported: 2026-08-03 10:08 UTC by Marian Rehak
Modified: 2026-11-10 19:53 UTC (History)
5 users (show)

Fixed In Version: ffmpeg-9.0.1-1.fc46,ffmpeg-9.0.1-4.fc45,ffmpeg-8.1.3-1.fc44
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


Attachments (Terms of Use)

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 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.

Comment 6 Aoife Moloney 2026-11-10 19:53:30 UTC
This message is a reminder that Fedora Linux 43 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 43 on 2026-12-02.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '43'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version. Note that the version field may be hidden.
Click the "Show advanced fields" button if you do not see it.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora Linux 43 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.


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