CVE-2026-9728 TOCTOU race in mbox_send syscall verifier allows userspace to leak kernel memory

The userspace syscall verifier zvrfymboxsend in drivers/mbox/mboxhandlers.c validated the nested msg-data/msg-size fields by reading them directly out of live userspace memory, and then forwarded the original, still-mutable userspace struct mboxmsg pointer to zimplmboxsend and the underlying...

CVE-2026-9728

CVE-2026-9728 is a time-of-check/time-of-use (TOCTOU) race condition in the Zephyr RTOS userspace mailbox subsystem. The syscall verifier z_vrfy_mbox_send() in drivers/mbox/mbox_handlers.c validates msg->data/msg->size by reading them directly from live userspace memory, then forwards the o...

stealth_call

Cos'è? Libreria header-only per Windows x64 che consente di invocare qualsiasi syscall NT senza toccare gli import di ntdll, senza lasciare stringhe nel binario e senza i soliti campanelli d'allarme che fanno impazzire gli EDR. Niente CRT. Niente STL. Niente IAT. L'intero progetto compila a circa...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102075)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102075 advisory. In the Linux kernel, the following vulnerability has been resolved: tracepoint: balance regfunc on funcadd failure in tracepointaddfunc When a tracepoint goes throug...

ish builds/812

iSH A project to get a Linux shell running on iOS, using usermode x86 emulation and syscall translation. For the current status of the project, check the issues tab, and the commit logs. App Store page TestFlight beta Discord server Wiki with help and tutorials README中文 如若未能保持最新，请提交PR以更新 Hacking...

CVE-2026-74338

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. A local attacker could bypass security checks by directly using the bpf2 system call to load a sleepable BPFLSMCGROUP program. This could lead to a kernel crash, resulting in a Denial of Service DoS on the affected syste...

CVE-2026-74362

A flaw was found in the Linux kernel's ext2 filesystem. When performing write operations on files opened with OSYNC or ODSYNC flags, the system call write2 could incorrectly report success to a local user even if the data synchronization to disk failed. This could lead to data integrity issues, a...

CVE-2026-49426

The FreeBSD kernel is vulnerable to a flaw in the audit(4) facility when handling system calls executed via ptrace(2) with the PT_SC_REMOTE operation. The kernel incorrectly passes the return value of an internal setup function to AUDIT_SYSCALL_EXIT() instead of the actual system call result. Con...

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 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...

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...

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...

PT-2026-77335

Name of the Vulnerable Software and Affected Versions Zephyr kernel affected versions not specified Description An issue exists in the validation of the k thread join and k thread abort system calls via the thread obj validate function in kernel/thread.c. When k object validate returns an error...

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-2026-9771

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...

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...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099754)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099754 advisory. In the Linux kernel, the following vulnerability has been resolved: net/smc: fix double-free of smcspdpriv when tee duplicates splice pipe buffer smcrxsplice allocat...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100293)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100293 advisory. In the Linux kernel, the following vulnerability has been resolved: net/smc: fix double-free of smcspdpriv when tee duplicates splice pipe buffer smcrxsplice allocat...

SindriKit v1.6.0

SindriKit Offensive Development Deserves Better Architecture. A C library for building offensive capabilities. Core Concept Most offensive utilities hardcode their execution mechanics inside the technique's logic. A reflective loader doesn't just map an image; it maps it using a specific, hardcod...