Bug 2570778 (CVE-2026-125252)

Summary: CVE-2026-125252 ffmpeg: ffmpeg: Denial of Service via memory leak in VAAPI decoding
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FFmpeg. An attacker could cause a Denial of Service (DoS) by supplying a specially crafted video stream that induces slice parsing errors during Video Acceleration API (VAAPI) decoding. When processing the malformed frames, the application fails to properly release allocated picture buffers and driver memory, leading to continuous memory leaks and eventual resource exhaustion.
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Description OSIDB Bzimport 2026-11-10 20:21:38 UTC
FFmpeg through 9.0.2 contains a memory leak vulnerability in libavcodec/vaapi_decode.c that allows attackers to exhaust memory by supplying streams with slice parse errors. Attackers can craft H.264 or other VAAPI-decoded video where later slices fail to parse on every frame, continuously leaking VA parameter and slice buffers plus driver and heap memory.