libs/gui/BufferQueueConsumer.cpp 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 2016-04-01 does not check for the android.permission.DUMP permission which allows attackers to obtain sensitive information and consequently bypass an unspecified protection mechanism via a dump request as demonstrated by obtaining Signature or SignatureOrSystem access aka internal bug 27046057.