Linux Kernel drm/i915 Use-After-Free Vulnerability in Virtual Machine Management

A use-after-free vulnerability has been addressed in the Linux kernel's Direct Rendering Manager (DRM) Intel graphics driver. This issue arises in the virtual machine (VM) management process, where adding a VM to the VM cross-address table (vm_xa) can expose it to userspace. Userspace could potentially race to close the VM before it is properly managed, leading to a use-after-free condition. The vulnerability has been resolved by ensuring an extra reference is taken before the VM is added to the table.

Impact

Exploitation of this vulnerability could lead to a use-after-free condition, which may be exploited to execute arbitrary code or cause a denial-of-service condition by crashing the system.