Race condition and memory corruption vulnerability in FFmpeg's update_dimensions function

CVE-2015-6761 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

The update_dimensions function in libavcodec/vp8.c in FFmpeg through 2.8.1, as used in Google Chrome before 46.0.2490.71 and other products, relies on a coefficient-partition count during multi-threaded operation, which allows remote attackers to cause a denial of service (race condition and memory corruption) or possibly have unspecified other impact via a crafted WebM file.

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