CVE-2026-14367

CVE-2026-14367 affects the Zephyr RTOS I3C IBI subsystem in drivers/i3c/i3c_ibi_workq.c. A statically-allocated work-node free-list (sys_slist_t) is accessed without synchronization: ISR-context callers invoke sys_slist_get() while the workqueue thread calls sys_slist_append(). This data race can...

PT-2026-83952

The I3C IBI subsystem in drivers/i3c/i3c ibi workq.c hands out statically-allocated work nodes through a free-list i3c ibi work nodes free implemented as a plain sys slist t, which provides no synchronization. The allocation helpers i3c ibi work enqueue, i3c ibi work enqueue target irq, i3c ibi...

CVE-2026-12366: Use After Free

Zephyr's dynamic kernel-object disposal path unrefcheck in kernel/userspace/userspace.c frees an object's storage kfreedyn-data once its reference count reaches zero, after running a per-object-type cleanup. The cleanup switch handled only KOBJMSGQ and KOBJSTACK; there was no KOBJTIMER case. A...