decoder/ih264d_api.c in mediaserver in Android 6.x before 2016-08-01 mishandles invalid PPS and SPS NAL units, which allows remote attackers to cause a denial of service (device hang or reboot) via a crafted media file, aka internal bug 28835995.
https://android.googlesource.com/platform/external/libavc/+/7554755536019e439433c515eeb44e701fb3bfb2