description: media/libmediaplayerservice/MediaPlayerService.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, 6.x before 2016-10-01, and 7.0 before 2016-10-01 does not validate a certain static_cast operation, which allows attackers to gain privileges via a crafted application, aka internal bug 30204103.