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Advisories

FFmpeg through 9.0.2 V4L2 M2M Decoder Deadlock via Reference Count Leak

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Severity
medium
Date
Affecting

  • FFmpeg <= 9.0.2

CWE
  • CWE-911 Improper Update of Reference Count
CVSS
5.7
CVSS V4 Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Joshua Rogers (AISLE Research), Michael Niedermayer
Description
FFmpeg through 9.0.2 contains a reference count leak in libavcodec/v4l2_buffers.c that allows attackers to deadlock the V4L2 mem2mem decoder on multi-plane capture formats. Attackers can supply crafted H.264, HEVC, or VP9 streams with resolution changes, making ff_v4l2_m2m_codec_reinit() wait forever and hang the decoding application.

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