omx/SimpleSoftOMXComponent.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, 6.x before 2016-09-01, and 7.0 before 2016-09-01 does not prevent input-port changes, which allows attackers to gain privileges via a crafted application, aka internal bug 29421804.
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