An issue was discovered in the Arm Android Gralloc Module. A non-privileged user can read a small portion of the allocator process memory. This affects Bifrost r24p0 through r41p0 before r42p0, Valhall r24p0 through r41p0 before r42p0, and Avalon r41p0 before r42p0.
https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities