CVE-2026-75142
8.5
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the overflow during MPEG-PS muxing.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FFmpeg | FFmpeg | 0 < 9d786e4b5e9b8482651928574de33772aeee7be1 | affected |
Weaknesses
- CWE-121: Stack-based Buffer Overflow
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24087
- https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/9d786e4b5e9b8482651928574de33772aeee7be1
- https://www.vulncheck.com/advisories/ffmpeg-stack-buffer-overflow-in-mpeg-ps-muxer-via-mpegenc-c
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