CVE-2026-53144

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdkfd: fix NULL dereference in get_queue_ids()<br /> <br /> When usr_queue_id_array is NULL and num_queues is non-zero,<br /> get_queue_ids() returns NULL. The callers check only IS_ERR() on the<br /> return value; since IS_ERR(NULL) == false the check passes, and<br /> suspend_queues() calls q_array_invalidate() which immediately<br /> dereferences NULL while iterating num_queues times.<br /> <br /> Userspace can trigger this via kfd_ioctl_set_debug_trap() by supplying<br /> num_queues &gt; 0 with a zero queue_array_ptr, causing a kernel panic.<br /> <br /> A NULL usr_queue_id_array with num_queues == 0 is a legitimate no-op<br /> (q_array_invalidate never executes, and resume_queues already guards<br /> all queue_ids dereferences behind a NULL check). Return ERR_PTR(-EINVAL)<br /> only when num_queues is non-zero and the pointer is absent; both callers<br /> already propagate IS_ERR() returns correctly to userspace.<br /> <br /> (cherry picked from commit f165a82cdf503884bb1797771c61b2fcc72113d4)