CVE-2022-46891 (bifrost, midgard, valhall)

An issue was discovered in the Arm Mali GPU Kernel Driver. There is a use-after-free. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Midgard r13p0 through r32p0, Bifrost r1p0 through r40p0, and Valhall r19p0 through r40p0.

access arm cve driver free gpu issue kernel kernel driver mali memory non operations privileged privileged user use-after-free