Bug 2565682

Summary: CVE-2026-119777 gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: stack buffer overflow in H.266/VVC parser [fedora-43]
Product: [Fedora] Fedora Reporter: lcelant
Component: gstreamer1-plugins-bad-freeAssignee: Yaakov Selkowitz <yselkowi>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 43CC: dominik, gwync, multimedia-sig, negativo17, wtaymans, yselkowi
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["185cf2c2-87be-46ae-b937-d70f46112b1f"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2564164    

Description lcelant 2026-11-03 10:34:30 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.

GStreamer Security Advisory GStreamer-SA-2026-0017 reports an integer overflow in the gst-plugins-bad H.266/VVC parser while parsing profile, tier, and level fields from malformed H.266 streams. The resulting stack-based buffer overflow may crash an application processing malicious media and could possibly allow code execution. Upstream lists gst-plugins-bad versions 1.25.1 through versions before 1.28.2 as affected; version 1.28.2 contains the fix. The local verification report confirmed the code pattern by static analysis but did not confirm the exact exploit path.