PT-2026-64764

Name of the Vulnerable Software and Affected Versions Zephyr versions prior to 4.4.1 Description In the userspace dynamic-objects subsystem, the thread idx alloc function in kernel/userspace/userspace.c allocates a new thread permission index from the global thread idx map bitmap without holding...

CVE-2026-7007

The Zephyr ext2 file system validates the on-disk superblock in ext2verifydisksuperblock subsys/fs/ext2/ext2impl.c before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields sblockspergroup and...

CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image

The Zephyr ext2 file system validates the on-disk superblock in ext2verifydisksuperblock subsys/fs/ext2/ext2impl.c before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields sblockspergroup and...

CVE-2026-7007

The CVE-2026-7007 issue affects Zephyr ext2: the on-disk superblock validation did not require non-zero values for s_blocks_per_group and s_inodes_per_group. If either field is zero, get_ngroups() and get_itable_entry() perform divisions using those fields during mount, triggering a divide-by-zer...

CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image

The Zephyr ext2 file system validates the on-disk superblock in ext2verifydisksuperblock subsys/fs/ext2/ext2impl.c before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields sblockspergroup and...

CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image

The Zephyr ext2 file system validates the on-disk superblock in ext2verifydisksuperblock subsys/fs/ext2/ext2impl.c before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields sblockspergroup and...

CVE-2026-10678

The MCTP-over-I2C+GPIO target binding in Zephyr subsys/pmci/mctp/mctpi2cgpiotarget.c processes pseudo-register writes from an I2C bus master byte-by-byte in mctpi2cgpiotargetwritereceived without validating the order or the receive buffer. In the affected versions the MCTPI2CGPIORXMSGADDR data...

CVE-2026-10675

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-10680

CVE-2026-10680 affects Zephyr Project’s Classic BR/EDR L2CAP signaling: l2cap_br_conf_req() and l2cap_br_conf_rsp() validate the per-command length against the whole PDU length (buf->len) instead of the per-command len, allowing underflow of opt_len and an out-of-bounds read/write during confi...

CVE-2026-10680 Out-of-bounds access in Zephyr BR/EDR L2CAP configuration request handling via `uint16_t` length underflow

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10678 NULL-pointer / out-of-bounds write in Zephyr MCTP I2C+GPIO target binding driven by an unauthenticated I2C controller

The MCTP-over-I2C+GPIO target binding in Zephyr subsys/pmci/mctp/mctpi2cgpiotarget.c processes pseudo-register writes from an I2C bus master byte-by-byte in mctpi2cgpiotargetwritereceived without validating the order or the receive buffer. In the affected versions the MCTPI2CGPIORXMSGADDR data...

EUVD-2026-46447

The MCTP-over-I2C+GPIO target binding in Zephyr subsys/pmci/mctp/mctpi2cgpiotarget.c processes pseudo-register writes from an I2C bus master byte-by-byte in mctpi2cgpiotargetwritereceived without validating the order or the receive buffer. In the affected versions the MCTPI2CGPIORXMSGADDR data...

CVE-2026-10678

The CVE-2026-10678 issue affects Zephyr’s MCTP over I2C+GPIO target binding (mctp_i2c_gpio_target.c). It processes I2C bus master writes byte-by-byte without validating the receive buffer, dereferencing b->rx_pkt to write data for data registers (MCTP_I2C_GPIO_RX_MSG_ADDR) before the receive b...

CVE-2026-10674 DoS (hard fault) in NXP LPUART driver: unsupported runtime UART config leaves clocks disabled

The NXP LPUART serial driver drivers/serial/uartmcuxlpuart.c, when CONFIGUARTUSERUNTIMECONFIGURE is enabled, called LPUARTDeinit at the start of mcuxlpuartconfigure, which disables the LPUART peripheral clocks. The requested configuration is validated only afterwards in mcuxlpuartconfigurebasic,...

PT-2026-62126

The DesignWare SPI driver drivers/spi/spi dw.c computed the SPI BAUDR clock divider as info-clock frequency / config-frequency without validating config-frequency. spi transceive is a Zephyr syscall and its verify handler drivers/spi/spi handlers.c copies the caller-supplied spi config from...

PT-2026-62125

The MCTP-over-I2C+GPIO target binding in Zephyr subsys/pmci/mctp/mctp i2c gpio target.c processes pseudo-register writes from an I2C bus master byte-by-byte in mctp i2c gpio target write received without validating the order or the receive buffer. In the affected versions the MCTP I2C GPIO RX MSG...

CVE-2026-10673

The Zephyr ADIN2111/ADIN1110 10BASE-T1S/T1L Ethernet driver drivers/ethernet/ethadin2111.c reassembles received Ethernet frames in OPEN Alliance OA SPI mode by copying device-supplied 64-byte data chunks into a fixed static buffer ctx-buf of size CONFIGETHADIN2111BUFFERSIZE default 1524 bytes. In...

EUVD-2026-44746

The Zephyr ADIN2111/ADIN1110 10BASE-T1S/T1L Ethernet driver drivers/ethernet/ethadin2111.c reassembles received Ethernet frames in OPEN Alliance OA SPI mode by copying device-supplied 64-byte data chunks into a fixed static buffer ctx-buf of size CONFIGETHADIN2111BUFFERSIZE default 1524 bytes. In...

CVE-2026-10673

The Zephyr ADIN2111/ADIN1110 10BASE-T1S/T1L Ethernet driver drivers/ethernet/ethadin2111.c reassembles received Ethernet frames in OPEN Alliance OA SPI mode by copying device-supplied 64-byte data chunks into a fixed static buffer ctx-buf of size CONFIGETHADIN2111BUFFERSIZE default 1524 bytes. In...

CVE-2026-10671

In Zephyr's kernel pipe implementation, the userspace syscall verifier zvrfykpipeinit in kernel/pipe.c used KSYSCALLOBJ which requires the kernel object to already be initialized instead of KSYSCALLOBJNEVERINIT which rejects an already-initialized object. As a result, on CONFIGUSERSPACE builds an...