CVE-2026-12233 Uninitialized mutex in TLS trusted-credential backend causes kernel NULL-deref DoS under contention

The PSA Protected Storage credential backend subsys/net/lib/tlscredentials/tlscredentialstrusted.c declared its credential-store mutex as a plain zero-filled static struct kmutex credentiallock; and never called kmutexinit on it. A statically zero-filled kmutex has an uninitialized wait queue its...

CVE-2026-12233 Uninitialized mutex in TLS trusted-credential backend causes kernel NULL-deref DoS under contention

The PSA Protected Storage credential backend subsys/net/lib/tlscredentials/tlscredentialstrusted.c declared its credential-store mutex as a plain zero-filled static struct kmutex credentiallock; and never called kmutexinit on it. A statically zero-filled kmutex has an uninitialized wait queue its...

CVE-2026-12052

The USB device-side CDC NCM class control-to-host handler usbdcdcncmcth in subsys/usb/devicenext/class/usbdcdcncm.c builds a fixed-size response for the GETNTBPARAMETERS 28-byte struct ntbparameters and GETNTBINPUTSIZE 8-byte struct ntbinputsize class requests and copies the whole structure into...

EUVD-2026-55967

The USB device-side CDC NCM class control-to-host handler usbdcdcncmcth in subsys/usb/devicenext/class/usbdcdcncm.c builds a fixed-size response for the GETNTBPARAMETERS 28-byte struct ntbparameters and GETNTBINPUTSIZE 8-byte struct ntbinputsize class requests and copies the whole structure into...

EUVD-2026-55939

The USB DFU class implementation in Zephyr's new experimental devicenext USB device stack contains a NULL pointer dereference in handledownload subsys/usb/devicenext/class/usbddfu.c. The handler computes MINsetup-wLength, buf-len and passes buf-data to the image write callback without checking th...

CVE-2026-11893

The Bluetooth HCI driver for Bouffalo Lab on-chip BLE controllers BL60x/BL70x/BL61x, btbflbsend in drivers/bluetooth/hci/hcibflb.c, violates the bthcidriverapi.send buffer-ownership contract. That contract documented at include/zephyr/drivers/bluetooth.h requires the buffer reference to be consum...

CVE-2026-11985

On the Zephyr ARM port, enabling the hardware FPU CONFIGFPU forces the "Floating point ABI" choice, which defaults to CONFIGFPHARDABI. Both FPHARDABI and FPSOFTABI permit the compiler to emit hardware FP instructions in any function, even code that never uses floating-point types. However, the...

CVE-2026-11985

On the Zephyr ARM port, enabling the hardware FPU CONFIGFPU forces the "Floating point ABI" choice, which defaults to CONFIGFPHARDABI. Both FPHARDABI and FPSOFTABI permit the compiler to emit hardware FP instructions in any function, even code that never uses floating-point types. However, the...

EUVD-2026-55936

On the Zephyr ARM port, enabling the hardware FPU CONFIGFPU forces the "Floating point ABI" choice, which defaults to CONFIGFPHARDABI. Both FPHARDABI and FPSOFTABI permit the compiler to emit hardware FP instructions in any function, even code that never uses floating-point types. However, the...

CVE-2026-11985

CVE-2026-11985 describes a cross-thread information leak on the Zephyr ARM port when the hardware FPU is enabled (CONFIG_FPU) but FPU register sharing is disabled. With default FP_ABI (FP_HARDABI) or FP_SOFTABI, FP instructions can be emitted in any function, while callee-saved FP registers (s16-...

CVE-2026-11893

The Bluetooth HCI driver for Bouffalo Lab on-chip BLE controllers BL60x/BL70x/BL61x, btbflbsend in drivers/bluetooth/hci/hcibflb.c, violates the bthcidriverapi.send buffer-ownership contract. That contract documented at include/zephyr/drivers/bluetooth.h requires the buffer reference to be consum...

EUVD-2026-55935

The Bluetooth HCI driver for Bouffalo Lab on-chip BLE controllers BL60x/BL70x/BL61x, btbflbsend in drivers/bluetooth/hci/hcibflb.c, violates the bthcidriverapi.send buffer-ownership contract. That contract documented at include/zephyr/drivers/bluetooth.h requires the buffer reference to be consum...

PT-2026-70059

Name of the Vulnerable Software and Affected Versions Zephyr ARM port affected versions not specified Description On the ARM port, enabling the hardware FPU via CONFIG FPU forces a Floating point ABI choice, defaulting to CONFIG FP HARDABI. Both FP HARDABI and FP SOFTABI allow the compiler to emi...

CVE-2026-8718

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-11812

The UpdateHub management subsystem subsys/mgmt/updatehub/updatehub.c drives every update operation through a single file-scope ctx structure that holds the CoAP block context, payload buffer, status code, socket, and a one-element poll-fd array fds1. Access to ctx was not serialized, and preparef...

CVE-2026-8718

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-8718 Out-of-bounds write in DTLS peer Connection ID getsockopt (`TLS_DTLS_PEER_CID_VALUE`) in Zephyr net sockets/TLS

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-8718 Out-of-bounds write in DTLS peer Connection ID getsockopt (`TLS_DTLS_PEER_CID_VALUE`) in Zephyr net sockets/TLS

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

CVE-2026-11810

The UpdateHub firmware-update agent's probe handler zimplupdatehubprobe in subsys/mgmt/updatehub/updatehub.c parses the JSON metadata returned by the update server into a fixed two-level nested-array struct. After parsing it validates only the outer array length objectslen != 2 and then...

CVE-2026-11809

CVE-2026-11809 (Zephyr UpdateHub OTA client) : The UpdateHub probe in subsys/mgmt/updatehub/updatehub.c uses a second heap buffer (metadata_copy) via memcpy(metadata_copy, metadata, strlen(metadata)) without zeroing. This omits the terminating NUL, so a subsequent json_obj_parse(metadata_copy, st...