CVE-2026-10671 User thread can re-initialize an in-use `k_pipe`, corrupting kernel wait queues (`CONFIG_USERSPACE`)

In Zephyr's kernel pipe implementation, the userspace syscall verifier zvrfykpipeinit in kernel/pipe.c used KSYSCALLOBJ which requires the kernel object to already be initialized instead of KSYSCALLOBJNEVERINIT which rejects an already-initialized object. As a result, on CONFIGUSERSPACE builds an...

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...