EUVD-2026-58751

A use-after-free exists in the Zephyr second-generation work queue kernel/work.c in the handling of delayable work timeouts. When a delayable work item's timeout has been dequeued and its handler worktimeout is in flight blocked acquiring the work-queue spinlock, a concurrent cancellation does no...

CVE-2026-12365 Use-after-free in Zephyr delayable work-queue cancellation under SMP timing race

A use-after-free exists in the Zephyr second-generation work queue kernel/work.c in the handling of delayable work timeouts. When a delayable work item's timeout has been dequeued and its handler worktimeout is in flight blocked acquiring the work-queue spinlock, a concurrent cancellation does no...

CVE-2026-12365

CVE-2026-12365 describes a kernel-use-after-free in Zephyr’s second-generation work queue (kernel/work.c) related to delayable work timeouts. If a delayable work item’s timeout has been dequeued and its handler work_timeout() is in flight, a concurrent cancellation can race, allowing a freed slot...