Array index error in the qdm2_decode_super_block function in libavcodec/qdm2.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via crafted QDM2 data, which triggers an out-of-bounds array access.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.