CVE-2026-10670 User-triggerable kernel NULL-pointer dereference (DoS) in `k_thread_name_copy()` syscall verifier

The CONFIGUSERSPACE verification handler for the kthreadnamecopy system call zvrfykthreadnamecopy in kernel/thread.c calls kobjectfind on the caller-supplied thread pointer and then dereferences the returned struct kobject without checking it for NULL. kobjectfind returns NULL whenever the suppli...

CVE-2026-10670

The CVE describes a local denial of service in Zephyr’s kernel: the CONFIG_USERSPACE verifier for k_thread_name_copy() dereferences ko without NULL checking after k_object_find() returns NULL for unregistered pointers. This NULL dereference occurs in supervisor mode, causing a kernel fault and po...