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Advisories

FFmpeg through 9.0.2 Heap Buffer Overflow via HEVC VAAPI Tile Arrays

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Severity
high
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-787 Out-of-bounds Write
CVSS
7.3
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vaapi_hevc_start_frame() in libavcodec/vaapi_hevc.c that copies unbounded PPS tile counts into fixed-size arrays. Attackers can supply a crafted HEVC bitstream with a large picture and many tiles to write controlled 16-bit values past heap-allocated hwaccel data, corrupting memory in applications decoding with VAAPI.

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