The secure-session feature in the mm-video-v4l2 venc component in mediaserver in Android 4.x before 4.4.4 5.0.x before 5.0.2 5.1.x before 5.1.1 and 6.x before 2016-08-01 mishandles heap pointers which allows attackers to obtain sensitive information via a crafted application aka internal bug 28920116.