CVE-2024-57844 drm/xe: Fix fault on fd close after unbind

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix fault on fd close after unbind If userspace holds an fd open, unbinds the device and then closes it, the driver shouldn't try to access the hardware. Protect it by using drmdeventer/drmdevexit. This fixes the followin...

CVE-2024-57844

CVE-2024-57844 – Linux kernel (drm/xe): A fault occurs when a userspace fd is kept open, the device is unbound, and the fd is closed; the driver may dereference hardware state, leading to a kernel page fault. The upstream fix guards the critical section with drm_dev_enter()/drm_dev_exit() to avoi...