decoder/ih264d_process_intra_mb.c in mediaserver in Android 6.x before 2016-07-01 mishandles intra mode, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted media file, aka internal bug 28165659.
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.