CVE-2026-12366

Summary: CVE-2026-12366 in Zephyr describes a use-after-free in the dynamic object disposal path for kernels objects. When a user-thread holds the last permission on a timer (K_OBJ_TIMER) and frees it, the timer’s memory is released without cancelling its embedded _timeout node from the global _t...

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

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...

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...

EUVD-2026-58750

The user-space system-call verifier zvrfyzlogmsgstaticcreate in subsys/logging/logmsg.c was a pure pass-through: it forwarded the caller-supplied source, desc, package, and data arguments directly to the kernel-mode implementation zimplzlogmsgstaticcreate without performing any of the mandatory...

CVE-2026-12364 Missing user-space pointer validation in logging syscall z_log_msg_static_create allows kernel memory disclosure and denial of service

The user-space system-call verifier zvrfyzlogmsgstaticcreate in subsys/logging/logmsg.c was a pure pass-through: it forwarded the caller-supplied source, desc, package, and data arguments directly to the kernel-mode implementation zimplzlogmsgstaticcreate without performing any of the mandatory...

CVE-2026-12364

The CVE-2026-12364 issue affects the Zephyr kernel’s user-space syscall verifier z_vrfy_z_log_msg_static_create(). The verifier failed to enforce K_SYSCALL_* checks when forwarding source, desc, package, and data to z_impl_z_log_msg_static_create(), allowing an attacker-controlled user-space thre...

CVE-2026-12364 Missing user-space pointer validation in logging syscall z_log_msg_static_create allows kernel memory disclosure and denial of service

The user-space system-call verifier zvrfyzlogmsgstaticcreate in subsys/logging/logmsg.c was a pure pass-through: it forwarded the caller-supplied source, desc, package, and data arguments directly to the kernel-mode implementation zimplzlogmsgstaticcreate without performing any of the mandatory...

CVE-2026-12364

The user-space system-call verifier zvrfyzlogmsgstaticcreate in subsys/logging/logmsg.c was a pure pass-through: it forwarded the caller-supplied source, desc, package, and data arguments directly to the kernel-mode implementation zimplzlogmsgstaticcreate without performing any of the mandatory...

PT-2026-72078

Name of the Vulnerable Software and Affected Versions Zephyr affected versions not specified Description A use-after-free issue exists in the dynamic kernel-object disposal path unref check within kernel/userspace/userspace.c. The system frees an object's storage using k freedyn-data when its...

PT-2026-72076

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description The user-space system-call verifier z vrfy z log msg static create in subsys/logging/log msg.c fails to perform mandatory K SYSCALL checks, acting as a...

PT-2026-72077

Name of the Vulnerable Software and Affected Versions Zephyr affected versions not specified Description A use-after-free issue exists in the second-generation work queue within kernel/work.c during the handling of delayable work timeouts. The problem occurs when a delayable work item's timeout i...

PT-2026-72075

Name of the Vulnerable Software and Affected Versions LoRaWAN Fragmented Data Block Transport affected versions not specified Description The LoRaWAN Fragmented Data Block Transport service fails to validate the fragment counter in a received DATA FRAGMENT command before forwarding it to the...

CVE-2026-12236

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

CVE-2026-12236 Infinite loop (DoS) in Bluetooth GATT client parsing of Read-By-Type responses with zero data length

The Bluetooth host GATT client function parsereadstdchardesc in subsys/bluetooth/host/gatt.c parses an ATT Read By Type Response received from a remote GATT server during BTGATTDISCOVERSTDCHARDESC discovery. The per-entry stride rsp-len is taken directly from the peer's PDU, and the parse loop bo...

CVE-2026-12234

The userspace syscall verifiers zvrfyzsocksendmsg and zvrfyzsockrecvmsg in subsys/net/lib/sockets/sockets.c snapshot the caller-supplied struct netmsghdr into a kernel-side copy with kusermodefromcopy, but then re-read the still-live user struct for subsequent decisions. The kernel iovec shadow...

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-2026-12234 TOCTOU double-fetch in `zsock_sendmsg`/`recvmsg` userspace verifiers allows kernel-heap out-of-bounds write

The userspace syscall verifiers zvrfyzsocksendmsg and zvrfyzsockrecvmsg in subsys/net/lib/sockets/sockets.c snapshot the caller-supplied struct netmsghdr into a kernel-side copy with kusermodefromcopy, but then re-read the still-live user struct for subsequent decisions. The kernel iovec shadow...