CVE-2026-9728

The userspace syscall verifier zvrfymboxsend in drivers/mbox/mboxhandlers.c validated the nested msg-data/msg-size fields by reading them directly out of live userspace memory, and then forwarded the original, still-mutable userspace struct mboxmsg pointer to zimplmboxsend and the underlying...

CVE-2026-9728

CVE-2026-9728 is a time-of-check/time-of-use (TOCTOU) race condition in the Zephyr RTOS userspace mailbox subsystem. The syscall verifier z_vrfy_mbox_send() in drivers/mbox/mbox_handlers.c validates msg->data/msg->size by reading them directly from live userspace memory, then forwards the o...

CVE-2026-9728 TOCTOU race in mbox_send syscall verifier allows userspace to leak kernel memory

The userspace syscall verifier zvrfymboxsend in drivers/mbox/mboxhandlers.c validated the nested msg-data/msg-size fields by reading them directly out of live userspace memory, and then forwarded the original, still-mutable userspace struct mboxmsg pointer to zimplmboxsend and the underlying...

CVE-2026-12232 Out-of-bounds read via unvalidated stream_id in Intel ALH DAI get_properties

The Intel ALH digital-audio-interface driver function daialhgetproperties in drivers/dai/intel/alh/alh.c used a caller-supplied int streamid with no range validation. The value indexes the fixed-size static const uint8t alhhandshakemap64 array and scales a FIFO register address, so an out-of-rang...

CVE-2026-12232

The Intel ALH digital-audio-interface driver function daialhgetproperties in drivers/dai/intel/alh/alh.c used a caller-supplied int streamid with no range validation. The value indexes the fixed-size static const uint8t alhhandshakemap64 array and scales a FIFO register address, so an out-of-rang...

CVE-2026-10677 Kernel heap memory leak in `z_vrfy_k_poll()` lets an unprivileged user thread exhaust the kernel resource pool

The CONFIGUSERSPACE syscall verifier zvrfykpoll in kernel/poll.c allocates a kernel-side copy of the user-supplied kpollevent via zthreadmalloc and then validates each event's object handle. Before this fix, validation used KOOPSKSYSCALLOBJ... inline inside the loop, which kills the calling threa...