Heap-based buffer overflow in the MPV_frame_start function in libavcodec/mpegvideo.c in FFmpeg before 0.9.1, when the lowres option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted H263 media file. NOTE: this vulnerability exists because of a regression error.

Multiple buffer overflows in the get_qcx function in the J2K decoder (j2kdec.c) in libavcode in FFmpeg before 0.9.1 allow remote attackers to cause a denial of service (application crash) via unspecified vectors.

The sbr_qmf_synthesis function in libavcodec/aacsbr.c in FFmpeg before 0.9.1 allows remote attackers to cause a denial of service (application crash) via a crafted mpg file that triggers memory corruption involving the v_off variable, probably a buffer underflow.

The dpcm_decode_frame function in libavcodec/dpcm.c in FFmpeg before 0.9.1 does not use the proper pointer after an audio API change, which allows remote attackers to cause a denial of service (application crash) via unspecified vectors, which triggers a heap-based buffer overflow.

The decodeTonalComponents function in the Actrac3 codec (atrac3.c) in libavcodec in FFmpeg 0.7.x before 0.7.12, and 0.8.x before 0.8.11; and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1 allows remote attackers to cause a denial of service (infinite loop and crash) and possibly execute arbitrary code via a large component count in an Atrac 3 file.

The dv_extract_audio function in libavcodec in FFmpeg 0.7.x before 0.7.12 and 0.8.x before 0.8.11 and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.5, and 0.8.x before 0.8.1 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted DV file.

The decode_init function in kmvc.c in libavcodec in FFmpeg before 0.10 and in Libav 0.5.x before 0.5.9, 0.6.x before 0.6.6, 0.7.x before 0.7.6, and 0.8.x before 0.8.1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a large palette size in a KMVC encoded file.

cavsdec.c in libavcodec in FFmpeg before 0.7.4 and 0.8.x before 0.8.3 allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, related to the decode_residual_block, check_for_slice, and cavs_decode_frame functions, a different vulnerability than CVE-2011-3362.

Integer signedness error in the decode_residual_inter function in cavsdec.c in libavcodec in FFmpeg before 0.7.4 and 0.8.x before 0.8.3 allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, a different vulnerability than CVE-2011-3362.

Integer signedness error in the decode_residual_block function in cavsdec.c in libavcodec in FFmpeg before 0.7.3 and 0.8.x before 0.8.2, and libav through 0.7.1, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted Chinese AVS video (aka CAVS) file.