codecs/aacdec/SoftAAC2.cpp in libstagefright 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 allows remote attackers to cause a denial of service (device hang or reboot) via crafted ADTS data, aka internal bug 29153599.