CVE-2025-40191

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdkfd: Fix kfd process ref leaking when userptr unmapping<br /> <br /> kfd_lookup_process_by_pid hold the kfd process reference to ensure it<br /> doesn&amp;#39;t get destroyed while sending the segfault event to user space.<br /> <br /> Calling kfd_lookup_process_by_pid as function parameter leaks the kfd<br /> process refcount and miss the NULL pointer check if app process is<br /> already destroyed.