Research / Finding
More strict checks in ffmpeg decodiing.
F-TELEGRAM-DESKTOP-FFMPEG-LINESIZE-MEMCPY-001
Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.
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Recorded evidence
—score not recorded
More strict checks in ffmpeg decodiing.
fixed publicly
details
- Finding IDs
- F-TELEGRAM-DESKTOP-FFMPEG-LINESIZE-MEMCPY-001
- Status
- fixed publicly
- Reported via
- Telegram security contact
- Note
- public commit eeafe9761409 on 2026-04-07 adds stricter negative-linesize handling in the affected ffmpeg render path.
F-TELEGRAM-DESKTOP-FFMPEG-LINESIZE-MEMCPY-001: Memory safety. A negative or invalid frame stride reaches a raw memory copy. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.
Mechanism source for F-TELEGRAM-DESKTOP-FFMPEG-LINESIZE-MEMCPY-001
Security area (1seal assessment): Memory safety. A negative or invalid frame stride reaches a raw memory copy. Reviewed 24 Sep 2026.
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