Multiple vulnerabilities were found in the ffmpeg, a multimedia player, server and encoder: CVE-2011-3362 An integer signedness error in decode_residual_block function of the Chinese AVS video decoder in libavcodec can lead to denial of service or possible code execution via a crafted CAVS file. CVE-2011-3973/CVE-2011-3974 Multiple errors in the Chinese AVS video decoder can lead to denial of service via an invalid bitstream. CVE-2011-3504 A memory allocation problem in the Matroska format decoder can lead to code execution via a crafted file.