Bug 2569552 (CVE-2026-125175) - CVE-2026-125175 ffmpeg: FFmpeg: Information disclosure via uninitialized memory in Flash Screen Video decoder
Summary: CVE-2026-125175 ffmpeg: FFmpeg: Information disclosure via uninitialized memo...
Keywords:
Status: NEW
Alias: CVE-2026-125175
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-10 13:02 UTC by OSIDB Bzimport
Modified: 2026-11-10 13:21 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-11-10 13:02:50 UTC 
FFmpeg through 9.0.2 contains an information disclosure vulnerability in flashsv_decode_block() in libavcodec/flashsv.c that copies uninitialized heap memory into decoded frames when inflate output is short. Attackers can supply a crafted FLV with an FSV1 stream whose zlib block data decompresses short, then recover heap contents from the decoded or re-encoded output.
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