The ff_er_frame_end function in libavcodec/error_resilience.c in FFmpeg before 1.0.4 and 1.1.x before 1.1.1 does not properly verify that a frame is fully initialized, which allows remote attackers to trigger a NULL pointer dereference via crafted picture data.
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.