In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear IPQ4019, MDM9206, MDM9607, MDM9625, MDM9635M, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 600, SD 615/16/SD 415, SD 617, SD 650/52, SD 800, SD 808, and SD 810, in widevine_dash_cmd_handler(), rsp buffers are passed off to widevine commands. These rsp buffers have values in them, such as buffer lengths, that need to be validated to ensure that no buffer overflow/over-reads happen. However, rsp buffers are not always in locked memory, meaning a time-of-check, time-of-use issue can occur where we check that the value is valid, but then a race condition occurs where this memory is swapped out with a different, possibly out of range, value.

In Snapdragon Automobile, Snapdragon Wearable and Snapdragon Mobile MDM9206,MDM9607,MDM9650,SD 210/SD 212/SD 205,SD 400,SD 410/12,SD 425,SD 430,SD 450,SD 600,SD 602A,SD 615/16/SD 415,SD 617,SD 625,SD 650/52,SD 800,SD 808,SD 810,SD 820,SD 820Am,SD 835,SD 845,MSM8909W, improper input validation in video_fmt_mp4r_process_atom_avc1() causes a potential buffer overflow.