Bug 2570938 (CVE-2026-125236)

Summary: CVE-2026-125236 ffmpeg: ffmpeg: Denial of Service via memory leak in VVC decoder
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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. A memory leak exists in the Versatile Video Coding (VVC) decoder when frame buffer allocation fails, leaving parameter set references unreleased. An attacker could exploit this vulnerability by enticing a user to process a specially crafted VVC video stream, causing memory consumption to grow steadily and resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-11-10 20:31:50 UTC
FFmpeg through 9.0.2 contains a memory leak vulnerability in alloc_frame() in libavcodec/vvc/refs.c that leaks SPS and PPS references when frame buffer allocation fails. Attackers can supply a crafted VVC (H.266) stream that repeatedly replaces parameter sets, steadily growing memory use and causing denial of service.