CVE-2026-12631

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

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...

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 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 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-2026-10669

Summary (CVE-2026-10669) : On Xtensa SoCs with CONFIG_XTENSA_MPU and CONFIG_USERSPACE, arch_buffer_validate() erroneously permits access when the buffer size rounds to a wrap of the 32-bit address space, bypassing MPU checks. This can let an unprivileged user-thread validate or copy memory it sho...

CVE-2026-45253

CVE-2026-45253 describes a missing validation in ptrace(PT_SC_REMOTE) related to syscall(2) and __syscall(2) meta-system calls. The issue allows an unprivileged local user who can debug a process to trigger arbitrary code execution in the kernel, potentially gaining full control of the affected s...

CVE-2021-26410

The CVE-2021-26410 entry concerns an improper syscall input validation in the AMD Secure Processor (ASP) that may force the kernel to read syscall parameter values from its own memory space, enabling an attacker to infer contents of kernel memory and potentially disclose information. Connected so...

PT-2026-7458

Name of the Vulnerable Software and Affected Versions Trusted OS affected versions not specified Description A flaw exists in the Trusted OS related to improper validation of system call parameters. This could allow a malicious driver to perform numerous mapping or unmapping operations on system...

CVE-2023-20525

Insufficient syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory outside the bounds of a mapped register potentially leading to a denial of service...

CVE-2023-20527

Improper syscall input validation in the ASP Bootloader may allow a privileged attacker to read memory out-of-bounds, potentially leading to a denial-of-service...