Bug 2569999 (CVE-2026-125262) - CVE-2026-125262 ffmpeg: heap buffer overflow via LCEVC enhancement decoding
Summary: CVE-2026-125262 ffmpeg: heap buffer overflow via LCEVC enhancement decoding
Keywords:
Status: NEW
Alias: CVE-2026-125262
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2573376 2573377
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-10 19:29 UTC by OSIDB Bzimport
Modified: 2026-11-13 17:44 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-11-10 19:29:50 UTC 
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/lcevcdec.c because LCEVC output picture dimensions are not validated against the allocated frame. Attackers can embed crafted LCEVC enhancement data with differing global configurations in H.264 or HEVC streams to corrupt heap memory in decoding applications.
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