The ih264d decoder in mediaserver in Android 6.x before 2016-08-01 mishandles slice numbers, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted media file, aka internal bug 28673410.
https://android.googlesource.com/platform/external/libavc/+/a78887bcffbc2995cf9ed72e0697acf560875e9e