Bug 2569621 (CVE-2026-125191) - CVE-2026-125191 ffmpeg: ffmpeg: Denial of Service via reference count leak in V4L2 decoder
Summary: CVE-2026-125191 ffmpeg: ffmpeg: Denial of Service via reference count leak in...
Keywords:
Status: NEW
Alias: CVE-2026-125191
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-10 13:15 UTC by OSIDB Bzimport
Modified: 2026-11-10 13:59 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-10 13:15:58 UTC 
FFmpeg through 9.0.2 contains a reference count leak in libavcodec/v4l2_buffers.c that allows attackers to deadlock the V4L2 mem2mem decoder on multi-plane capture formats. Attackers can supply crafted H.264, HEVC, or VP9 streams with resolution changes, making ff_v4l2_m2m_codec_reinit() wait forever and hang the decoding application.
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