Research / Finding
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F-TELEGRAM-IOS-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
fixed publicly
details
- Finding IDs
- F-TELEGRAM-IOS-FFMPEG-LINESIZE-MEMCPY-001
- Status
- fixed publicly
- Reported via
- Telegram security contact
- Note
- public commits 615becca7ae7 and 9ed75ca048e7 on 2026-04-21 add isPlanarYUV420Safe() before memcpy paths, rejecting negative frame.lineSize[0..3] for the affected ffmpeg decoded-frame flows.
F-TELEGRAM-IOS-FFMPEG-LINESIZE-MEMCPY-001: Memory safety. Negative frame strides reach planar copy/convert paths. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.
Mechanism source for F-TELEGRAM-IOS-FFMPEG-LINESIZE-MEMCPY-001
Security area (1seal assessment): Memory safety. Negative frame strides reach planar copy/convert paths. Reviewed 24 Sep 2026.
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