CVE-2025-40340 - Xe Linux DRM Oops in Gem Fault

CVE ID : CVE-2025-40340 Published : Dec. 9, 2025, 6:28 a.m. | 1 hour, 55 minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test. I saw an oops in xe_gem_fault when running the xe-fast-feedback testlist against the realtime kernel without debug options enabled. The panic happens after core_hotunplug unbind-rebind finishes. Presumably what happens is that a process mmaps, unlocks because of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left, causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since there was nothing left to populate, and then oopses in

Source: Telegram CVE Monitor