ffmpeg: FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavforma...
CVE-2026-75145 is fixed in ffmpeg on 1 platform by DEBIAN-CVE-2026-75145 (version 7:9.0.2-1), released August 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.
FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The OBU size is cast to long before comparison against the remaining frame size. On targets where long is 32 bits, including 64-bit Windows, sufficiently large OBU size values are sign-flipped by the narrowing cast, producing a negative value that passes the payload size check. This allows an oversized OBU to bypass the safety bound on affected platforms, leading to out-of-bounds memory access when the oversized value is subsequently used as a copy length.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ffmpeg · Debian 14 | 7:9.0.2-1 | DEBIAN-CVE-2026-75145 | Aug 19, 2026 |
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