Bug 2457970

Summary: CVE-2026-30998 ffmpeg: FFmpeg: Denial of Service vulnerability in zmqsend.c via crafted input [fedora-all]
Product: [Fedora] Fedora Reporter: Jon Moroney <jmoroney>
Component: ffmpegAssignee: Multimedia SIG <multimedia-sig>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: asn, dominik, multimedia-sig, ngompa13, philip.wyett
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e48a9c97-988c-4422-b4d1-8d34e6b33734"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-06-23 09:41:44 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: 2457861    

Description Jon Moroney 2026-04-13 19:50:44 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 2026-05-22 09:21:17 UTC
Fixed by https://github.com/FFmpeg/FFmpeg/commit/18b83f2d0a0f9bcbafb0001a2911327c4b8df056 , not in any release.

Comment 2 Fedora Update System 2026-06-22 22:34:15 UTC
FEDORA-2026-20f89207bb (ffmpeg-8.1.2-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-20f89207bb

Comment 3 Fedora Update System 2026-06-22 23:35:18 UTC
FEDORA-2026-bcaf0ddb2a (ffmpeg-8.1.2-2.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-bcaf0ddb2a

Comment 4 leigh scott 2026-06-22 23:46:46 UTC
(In reply to Fedora Update System from comment #2)
> FEDORA-2026-20f89207bb (ffmpeg-8.1.2-2.fc45) has been submitted as an update
> to Fedora 45.
> https://bodhi.fedoraproject.org/updates/FEDORA-2026-20f89207bb

(In reply to Dominik 'Rathann' Mierzejewski from comment #1)
> Fixed by
> https://github.com/FFmpeg/FFmpeg/commit/
> 18b83f2d0a0f9bcbafb0001a2911327c4b8df056 , not in any release.

So you have patched ffmpeg to fix a CVE in a tool (zmqsend) we don't even build?

Comment 5 Fedora Update System 2026-06-23 01:15:42 UTC
FEDORA-2026-bcaf0ddb2a 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-bcaf0ddb2a`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-bcaf0ddb2a

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

Comment 6 Dominik 'Rathann' Mierzejewski 2026-06-23 09:41:44 UTC
(In reply to leigh scott from comment #4)
> (In reply to Fedora Update System from comment #2)
> > FEDORA-2026-20f89207bb (ffmpeg-8.1.2-2.fc45) has been submitted as an update
> > to Fedora 45.
> > https://bodhi.fedoraproject.org/updates/FEDORA-2026-20f89207bb
> 
> (In reply to Dominik 'Rathann' Mierzejewski from comment #1)
> > Fixed by
> > https://github.com/FFmpeg/FFmpeg/commit/
> > 18b83f2d0a0f9bcbafb0001a2911327c4b8df056 , not in any release.
> 
> So you have patched ffmpeg to fix a CVE in a tool (zmqsend) we don't even
> build?

Oh we do build it:
https://kojipkgs.fedoraproject.org//packages/ffmpeg/8.1.2/2.fc44/data/logs/x86_64/build.log
...
g++ -Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -Llibavutil -Llibswscale -Llibswresample -Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes -Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes -Wl,--as-needed -Wl,-z,noexecstack -Wl,-rpath-link=:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wno-error=incompatible-pointer-types -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fno-math-errno -fno-signed-zeros -o tools/zmqsend tools/zmqsend.o ...

But, you are correct in that we're not actually shipping it. Thanks for pointing that out. I'll unpush the update and close this.