PT-2026-141025
CVE-2026-125197
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Published
2026-11-09
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Updated
2026-11-09
Description by
CVSS 3.1
6.1
MediumMetricsAV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
FFmpeg through 9.0.2 contains an integer underflow in decode frame() in libavcodec/lcldec.c that allows attackers to trigger a heap out-of-bounds read via short ZLIB packets with FLAG MULTITHREAD. Attackers can supply a crafted AVI or MKV file with an LCL video stream whose packet is shorter than 8 bytes, bypassing length clamping to crash the decoding application.
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