In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile and Snapdragon Mobile SD 820 and SD 820A, the input to RPMB write response function is a buffer from HLOS that needs to be authenticated (using HMAC) and then processed. However, some of the processing occurs before the buffer is authenticated. The function will return various types of errors depending on the values of the `response` and `result` fields of the buffer before verifying the HMAC tag.
In Android before 2018-04-05 or earlier security patch level on Qualcomm Small Cell SoC, Snapdragon Mobile, and Snapdragon Wear FSM9055, MDM9206, MDM9607, MDM9635M, MDM9640, MDM9650, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 425, SD 430, SD 450, SD 615/16/SD 415, SD 617, SD 625, SD 650/52, SD 808, SD 810, SD 820, SD 835, and SDX20, while logging debug statements or ftrace events from rmnet_data, the socket buffer function uses normal format specifiers which may result in information exposure.
In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile and Snapdragon Mobile SD 425, SD 430, SD 450, SD 625, SD 650/52, SD 820, and SD 820A, there is a TOCTOU vulnerability in the input validation for bulletin_board_read syscall. A pointer dereference is being validated without promising the pointer hasn't been changed by the HLOS program.
In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile SD 425, SD 430, SD 450, SD 625, and SD 650/52, there is improper access control to a bus.
In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile MDM9640, SDM630, MSM8976, MSM8937, SDM845, MSM8976, and MSM8952, when running module or kernel code with improper access control allowing writing to arbitrary regions of memory, the user may utilize this vector to alter module executable code.