Bug 2564497 (CVE-2026-120247) - CVE-2026-120247 ffmpeg: ffmpeg: Information disclosure via uninitialized heap memory in Huffyuv decoder
Summary: CVE-2026-120247 ffmpeg: ffmpeg: Information disclosure via uninitialized heap...
Keywords:
Status: NEW
Alias: CVE-2026-120247
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: 2565026 2565027 2565030 2565034 2565037 2565040 2565044 2565048 2565051 2565055 2565057 2565060 2565062 2565065 2565067 2565071 2565073
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-01 01:02 UTC by OSIDB Bzimport
Modified: 2026-11-02 10:34 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-11-01 01:02:06 UTC 
FFmpeg 2.3 through 9.0.2 contains a use of uninitialized resource vulnerability in the Huffyuv decoder that allows attackers to leak heap memory into decoded pixels via short packed-BGR bitstreams. Attackers can craft a Huffyuv BGR24/BGRA video whose entropy data ends early, causing decode_slice() to add uninitialized s->temp[0] bytes into output frames, exposing heap contents.
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