services/audioflinger/Effects.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 EFFECT_CMD_SET_PARAM and EFFECT_CMD_SET_PARAM_DEFERRED commands, which allows attackers to obtain sensitive information via a crafted application, aka internal bug 30204301.