In the Linux kernel, the following vulnerability has been resolved:
drm/vmwgfx: Fix the lifetime of the bo cursor memory
The cleanup can be dispatched while the atomic update is still active, which means that the memory acquired in the atomic update needs to not be invalidated by the cleanup. The buffer objects in vmwplanestate instead of using the builtin mapandcache were trying to handle the lifetime of the mapped memory themselves, leading to crashes.
Use the mapandcache instead of trying to manage the lifetime of the buffer objects held by the vmwplanestate.
Fixes kernel oops'es in IGT's kmscursorlegacy forked-bo.