CVE-2026-10684

In subsys/debug/coredump/coredumpshell.c, printcoredumphdr used the 16-bit tgtcode field of a stored Zephyr coredump header directly as an index into coredumptargetcode2str, a fixed 7-element array of string pointers, with no bounds check. A stored coredump whose tgtcode is = 7 causes an...

CVE-2026-10684 Out-of-bounds read in coredump shell when printing stored-dump target code

In subsys/debug/coredump/coredumpshell.c, printcoredumphdr used the 16-bit tgtcode field of a stored Zephyr coredump header directly as an index into coredumptargetcode2str, a fixed 7-element array of string pointers, with no bounds check. A stored coredump whose tgtcode is = 7 causes an...

CVE-2026-10682 Out-of-bounds write in Zephyr `log_filter_set` syscall verifier reachable from userspace

The userspace verifier zvrfylogfilterset for the logfilterset syscall in subsys/logging/logmgmt.c performed a signed comparison against the int16t srcid parameter: srcid int16tlogsrccntgetdomainid. Any negative value for srcid e.g. -1 trivially satisfied this check and was forwarded into...

CVE-2026-10682 Out-of-bounds write in Zephyr `log_filter_set` syscall verifier reachable from userspace

The userspace verifier zvrfylogfilterset for the logfilterset syscall in subsys/logging/logmgmt.c performed a signed comparison against the int16t srcid parameter: srcid int16tlogsrccntgetdomainid. Any negative value for srcid e.g. -1 trivially satisfied this check and was forwarded into...

CVE-2026-10682

The CVE-2026-10682 entry describes an OOB read and subsequent memory-write in Zephyr’s log_filter_set syscall verifier due to a signed comparison: src_id < (int16_t)log_src_cnt_get(domain_id). Negative src_id values (e.g., -1) pass the check after sign-extension and are used as an unsigned ind...

CVE-2026-10682

The userspace verifier zvrfylogfilterset for the logfilterset syscall in subsys/logging/logmgmt.c performed a signed comparison against the int16t srcid parameter: srcid int16tlogsrccntgetdomainid. Any negative value for srcid e.g. -1 trivially satisfied this check and was forwarded into...

CVE-2026-10681

In Zephyr's userspace dynamic-objects subsystem, threadidxalloc in kernel/userspace/userspace.c allocated a new thread permission index from the global threadidxmap bitmap without holding listslock. On SMP systems, two user-mode threads invoking the kobjectallocKOBJTHREAD syscall concurrently can...

CVE-2026-10681

In Zephyr's userspace dynamic-objects subsystem, threadidxalloc in kernel/userspace/userspace.c allocated a new thread permission index from the global threadidxmap bitmap without holding listslock. On SMP systems, two user-mode threads invoking the kobjectallocKOBJTHREAD syscall concurrently can...

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 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-2026-10678

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...