CVE-2026-10646

Zephyr's BSD-sockets getaddrinfo() (subsys/net/lib/sockets/getaddrinfo.c) has a use-after-return risk from a stack-allocated ai_state being kept as user_data during a DNS resolver retry. If a semaphore wait times out and the code retries without cancelling the previous query or resetting the sema...

CVE-2026-10646 Use-after-return in `zsock_getaddrinfo()` when a timed-out DNS query is retried without cancellation

Zephyr's BSD-sockets getaddrinfo implementation subsys/net/lib/sockets/getaddrinfo.c passes a pointer to a stack-allocated state object struct getaddrinfostate aistate as the userdata of an asynchronous DNS resolver query. The socket layer waits on a semaphore with a timeout deliberately set...

CVE-2026-10643

Zephyr's IP socket recvmsg implementation subsys/net/lib/sockets/socketsinet.c, insertpktinfo validated the user-supplied ancillary msgcontrol buffer using only the payload length msg-msgcontrollen pktinfolen before writing a full control message consisting of an aligned cmsg header plus the...

PT-2026-53091

Name of the Vulnerable Software and Affected Versions Zephyr versions prior to 4.3.0 Zephyr version 4.3.0 Zephyr version 4.4.0 Description The Bluetooth LE Audio Basic Audio Profile BAP unicast client mishandles state notifications supplied by a peer. In the unicast client ep qos state function...

CVE-2026-10643 Out-of-bounds heap write in Zephyr `recvmsg()` ancillary-data path (`insert_pktinfo` undersizes the control-buffer capacity check)

Zephyr's IP socket recvmsg implementation subsys/net/lib/sockets/socketsinet.c, insertpktinfo validated the user-supplied ancillary msgcontrol buffer using only the payload length msg-msgcontrollen pktinfolen before writing a full control message consisting of an aligned cmsg header plus the...

CVE-2026-10643

Zephyr CVE-2026-10643 affects the IP socket recvmsg() ancillary-data path (insert_pktinfo in subsys/net/lib/sockets/sockets_inet.c). A check only compared msg_controllen to pktinfo_len, omitting the cmsg header size, allowing an under-checked window (e.g., 16–27 bytes for IPv4 IP_PKTINFO on a 64‑...

CVE-2026-10643 Out-of-bounds heap write in Zephyr `recvmsg()` ancillary-data path (`insert_pktinfo` undersizes the control-buffer capacity check)

Zephyr's IP socket recvmsg implementation subsys/net/lib/sockets/socketsinet.c, insertpktinfo validated the user-supplied ancillary msgcontrol buffer using only the payload length msg-msgcontrollen pktinfolen before writing a full control message consisting of an aligned cmsg header plus the...

CVE-2026-10643

Zephyr's IP socket recvmsg implementation subsys/net/lib/sockets/socketsinet.c, insertpktinfo validated the user-supplied ancillary msgcontrol buffer using only the payload length msg-msgcontrollen pktinfolen before writing a full control message consisting of an aligned cmsg header plus the...

CVE-2026-10643 Out-of-bounds heap write in Zephyr `recvmsg()` ancillary-data path (`insert_pktinfo` undersizes the control-buffer capacity check)

Zephyr's IP socket recvmsg implementation subsys/net/lib/sockets/socketsinet.c, insertpktinfo validated the user-supplied ancillary msgcontrol buffer using only the payload length msg-msgcontrollen pktinfolen before writing a full control message consisting of an aligned cmsg header plus the...

CVE-2026-13351

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer allocated from a memory...

CVE-2026-13351 net: Maliciously fragmented IPv6 packets can prevent receiving/processing future incoming packets

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer allocated from a memory...

CVE-2026-13351 net: Maliciously fragmented IPv6 packets can prevent receiving/processing future incoming packets

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer allocated from a memory...

CVE-2026-13351

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer allocated from a memory...

EUVD-2026-39478

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer allocated from a memory...

CVE-2026-10642

The Zephyr PL011 UART driver drivers/serial/uartpl011.c contains an unbounded software loop in pl011irqtxenable that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit PL011IMSCTXIM is set, to work around the controller's level-transition TX-interrupt...

CVE-2026-10642

The Zephyr PL011 UART driver drivers/serial/uartpl011.c contains an unbounded software loop in pl011irqtxenable that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit PL011IMSCTXIM is set, to work around the controller's level-transition TX-interrupt...

CVE-2026-10642 Unbounded TX busy-loop DoS in Zephyr PL011 UART driver under CTS hardware flow control

The Zephyr PL011 UART driver drivers/serial/uartpl011.c contains an unbounded software loop in pl011irqtxenable that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit PL011IMSCTXIM is set, to work around the controller's level-transition TX-interrupt...

CVE-2026-10642 Unbounded TX busy-loop DoS in Zephyr PL011 UART driver under CTS hardware flow control

The Zephyr PL011 UART driver drivers/serial/uartpl011.c contains an unbounded software loop in pl011irqtxenable that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit PL011IMSCTXIM is set, to work around the controller's level-transition TX-interrupt...

CVE-2026-10642

The CVE-2026-10642 issue affects the Zephyr PL011 UART driver (drivers/serial/uart_pl011.c) where pl011_irq_tx_enable() can spin in an unbounded loop when CTS hardware flow control is enabled and CTS is de-asserted by the peer. This causes the TX interrupt to remain masked and the controller to s...

CVE-2026-10642 Unbounded TX busy-loop DoS in Zephyr PL011 UART driver under CTS hardware flow control

The Zephyr PL011 UART driver drivers/serial/uartpl011.c contains an unbounded software loop in pl011irqtxenable that repeatedly invokes the interrupt-driven application callback while the TX interrupt mask bit PL011IMSCTXIM is set, to work around the controller's level-transition TX-interrupt...