Linux Kernel Page Fault Vulnerability in DRM/XE Component

A vulnerability in the Linux kernel's DRM/XE component can lead to a page fault when userspace closes a file descriptor (fd) after unbinding the device. This issue occurs because the driver attempts to access the hardware while the fd is still open, causing a supervisor read access page fault in kernel mode. The vulnerability has been addressed by ensuring the driver properly manages device access during the fd closure process.

Impact

Exploitation of this vulnerability can cause a page fault in the kernel, leading to a crash or unintended behavior of the system.