CVE-2025-21880

Linux kernel CVE-2025-21880 affects the DRM XE userptr flow (drm/xe/userptr), specifically xe_vm_userptr_pin and EFAULT handling from hmm_range_fault(). The issue arose when EFAULT was treated as non-fatal, which could leave the userptr VMA on the rebind list during preempt_rebind_work_func(), le...