In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, and SD 800, while reading PlayReady rights string information from command buffer (which is sent from non-secure side), if length of rights string is very large, a buffer over read occurs, exposing TZ App memory to non-secure side.