A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.
An issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to obtain write access to read-only memory, or obtain access to already freed memory. This affects Valhall r29p0 through r38p1 before r38p2, and r39p0 before r40p0.