CVE-2026-12632

In Zephyr RTOS, ptp_msg_post_recv() in subsys/net/lib/ptp/msg.c indexes the 14-entry msg_size[] table using an attacker-controlled 4-bit message type (0xE/0xF) with no bounds check, causing out-of-bounds reads and writes via msg_tlv_post_recv(). Any host on the same link can trigger a crash (CVSS...

CVE-2026-12631

CVE-2026-12631 is a broken access-control flaw in the Zephyr RTOS kernel affecting the k_thread_join() and k_thread_abort() syscall validation path in kernel/thread.c. The root cause is a logic inversion: K_SYSCALL_VERIFY_MSG treats a non-zero (error) return as success, so the access-denied branc...

CVE-2026-12631 Broken access-control denial in k_thread_join/k_thread_abort syscall validation in Zephyr kernel

The Zephyr kernel validates the kthreadjoin and kthreadabort system calls declared syscall in include/zephyr/kernel.h through threadobjvalidate in kernel/thread.c. Its default switch branch is the access-denied path, taken when kobjectvalidate returns -EPERM the calling user thread was never...

EUVD-2026-61491

The Zephyr kernel validates the kthreadjoin and kthreadabort system calls declared syscall in include/zephyr/kernel.h through threadobjvalidate in kernel/thread.c. Its default switch branch is the access-denied path, taken when kobjectvalidate returns -EPERM the calling user thread was never...

CVE-2026-12631 Broken access-control denial in k_thread_join/k_thread_abort syscall validation in Zephyr kernel

The Zephyr kernel validates the kthreadjoin and kthreadabort system calls declared syscall in include/zephyr/kernel.h through threadobjvalidate in kernel/thread.c. Its default switch branch is the access-denied path, taken when kobjectvalidate returns -EPERM the calling user thread was never...

PT-2026-77336

Zephyr's Precision Time Protocol receive handler ptp msg post recv in subsys/net/lib/ptp/msg.c takes the 4-bit message type straight off the wire via ptp msg type msg-header.type major sdo id & 0xF, range 0-15 and uses it to index the msg size table. That table only defines entries up to PTP MSG...

PT-2026-77335

The Zephyr kernel validates the k thread join and k thread abort system calls declared syscall in include/zephyr/kernel.h through thread obj validate in kernel/thread.c. Its default switch branch is the access-denied path, taken when k object validate returns -EPERM the calling user thread was...

CVE-2026-9771

The flashcopy system call is verified by zvrfyflashcopy in drivers/flash/flashutil.c. On builds with CONFIGUSERSPACE enabled, this handler is the kernel-side trust boundary for a user-mode caller. Prior to the fix it validated only the output buffer KSYSCALLMEMORYWRITE and passed the two struct...

CVE-2026-12630

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...

CVE-2026-12519 Out-of-bounds stack read and write in Zephyr WNC-M14A2A modem socket-notify parsing

The WNC-M14A2A LTE-M modem driver mishandles unsolicited %NOTIFYEV: events in oncmdsocknotifyev drivers/modem/vendorstandalone/wncm14a2a.c. The response line is linearized into a fixed 40-byte stack buffer via netbuflinearize, which caps the copy at 39 bytes and returns outlen = 39. The two...

CVE-2026-12519

CVE-2026-12519 is an out-of-bounds stack read and write in the Zephyr RTOS WNC-M14A2A LTE-M modem driver, specifically in on_cmd_socknotifyev() (drivers/modem/vendor_standalone/wncm14a2a.c). Two quote-delimiter scanning loops were bounded by the full frame length (len) instead of the linearized b...

CVE-2026-12519 Out-of-bounds stack read and write in Zephyr WNC-M14A2A modem socket-notify parsing

The WNC-M14A2A LTE-M modem driver mishandles unsolicited %NOTIFYEV: events in oncmdsocknotifyev drivers/modem/vendorstandalone/wncm14a2a.c. The response line is linearized into a fixed 40-byte stack buffer via netbuflinearize, which caps the copy at 39 bytes and returns outlen = 39. The two...

CVE-2026-9771 Missing device-pointer validation in flash_copy() syscall allows userspace privilege escalation

The flashcopy system call is verified by zvrfyflashcopy in drivers/flash/flashutil.c. On builds with CONFIGUSERSPACE enabled, this handler is the kernel-side trust boundary for a user-mode caller. Prior to the fix it validated only the output buffer KSYSCALLMEMORYWRITE and passed the two struct...

CVE-2026-9771

CVE-2026-9771 is a missing device-pointer validation vulnerability in the Zephyr RTOS flash_copy() system call (drivers/flash/flash_util.c), affecting builds with CONFIG_USERSPACE enabled. The handler z_vrfy_flash_copy() validated only the output buffer but passed src_dev and dst_dev directly to ...

CVE-2026-9771 Missing device-pointer validation in flash_copy() syscall allows userspace privilege escalation

The flashcopy system call is verified by zvrfyflashcopy in drivers/flash/flashutil.c. On builds with CONFIGUSERSPACE enabled, this handler is the kernel-side trust boundary for a user-mode caller. Prior to the fix it validated only the output buffer KSYSCALLMEMORYWRITE and passed the two struct...

EUVD-2026-60268

The flashcopy system call is verified by zvrfyflashcopy in drivers/flash/flashutil.c. On builds with CONFIGUSERSPACE enabled, this handler is the kernel-side trust boundary for a user-mode caller. Prior to the fix it validated only the output buffer KSYSCALLMEMORYWRITE and passed the two struct...

CVE-2026-12630

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...

EUVD-2026-60267

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...

CVE-2026-12630 6LoWPAN IPHC uncompression out-of-bounds read on reserved destination addressing mode

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...

CVE-2026-12630 6LoWPAN IPHC uncompression out-of-bounds read on reserved destination addressing mode

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...