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Integer underflow in libavcodec/cinepak.c in FFmpeg before 2.4.2 allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via crafted Cinepak video data.
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* versions up to 2.4.1 (inclusive)