CVE-2024-46866

CVE-2024-46866 is a Linux kernel DRM-XE issue: bo_meminfo() can inspect bo state (tt/ttm) without holding the bo lock, allowing state changes that may cause NPD or UAF. The fix grabs the bo lock during bo_meminfo() and adds a ref for object_idr; v2 also introduces xe_bo_assert_held(). Concrete de...