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Advisories

FFmpeg before 8.1.3 and 9.x before 9.0.2 VVC Decoder Out-of-Bounds Write via sh_entry_points

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Severity
high
Date
Affecting

  • FFmpeg >= 7.0, < 8.1.3

  • FFmpeg >= 9.0, < 9.0.2

CWE
  • CWE-787 Out-of-bounds Write
CVSS
8.5
CVSS V4 Vector
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
Credit
Umar Pathan (Umar0x), Joshua Rogers (AISLE Research), Umar Pathan
Description
FFmpeg before 8.1.3 and 9.x before 9.0.2 contains an out-of-bounds write vulnerability in the VVC decoder's sh_entry_points() function in libavcodec/vvc/ps.c. Attackers can supply a crafted VVC (H.266) bitstream whose SPS/PPS tile and WPP layout produces excess entry points, overflowing entry_point_start_ctu and corrupting decoder memory.

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