Bug 2570551 (CVE-2026-125246) - CVE-2026-125246 ffmpeg: ffmpeg: Denial of Service via assertion failure in cbs_jpeg_assemble_fragment
Summary: CVE-2026-125246 ffmpeg: ffmpeg: Denial of Service via assertion failure in cb...
Keywords:
Status: NEW
Alias: CVE-2026-125246
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 20:06 UTC by OSIDB Bzimport
Modified: 2026-11-10 23:00 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-10 20:06:29 UTC 
FFmpeg through 9.0.2 contains a denial of service vulnerability in cbs_jpeg_assemble_fragment() that miscounts 0xff stuffing bytes in JPEG scan headers. Attackers can supply a crafted JPEG/MJPEG stream with 0xff in the scan header, triggering an av_assert0 abort when CBS-based bitstream filters process it.
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