In writeToParcel and createFromParcel of RttManager.java, there is a permission bypass due to a write size mismatch. This could lead to a local escalation of privileges where the user can start an activity with system privileges, with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: 6.0, 6.0.1, 7.0, 7.1.1, 7.1.2, 8.0, 8.1. Android ID: A-70398564.