CVE-2026-19947 Missing kernel object permission check in devmux syscalls allows unprivileged user threads to retarget a device multiplexer

The device multiplexer pseudo-driver in drivers/misc/devmux/devmux.c exposes two system calls, devmuxselectget and devmuxselectset. When CONFIGUSERSPACE is enabled, their user-mode verifiers zvrfydevmuxselectget and zvrfydevmuxselectset forwarded directly to the kernel implementations without...

CVE-2026-19947 Missing kernel object permission check in devmux syscalls allows unprivileged user threads to retarget a device multiplexer

The device multiplexer pseudo-driver in drivers/misc/devmux/devmux.c exposes two system calls, devmuxselectget and devmuxselectset. When CONFIGUSERSPACE is enabled, their user-mode verifiers zvrfydevmuxselectget and zvrfydevmuxselectset forwarded directly to the kernel implementations without...

CVE-2026-19947

The device multiplexer pseudo-driver in drivers/misc/devmux/devmux.c contains an authorization flaw where the system calls devmux_select_get() and devmux_select_set() bypass kernel-object validation. When CONFIG_USERSPACE and CONFIG_DEVMUX are enabled, user-mode verifiers fail to perform k_object...

CVE-2026-12366

Summary: CVE-2026-12366 in Zephyr describes a use-after-free in the dynamic object disposal path for kernels objects. When a user-thread holds the last permission on a timer (K_OBJ_TIMER) and frees it, the timer’s memory is released without cancelling its embedded _timeout node from the global _t...

CVE-2026-8718

tlsoptdtlspeerconnectionidvalueget in subsys/net/lib/sockets/socketstls.c, which handles getsockoptSOLTLS, TLSDTLSPEERCIDVALUE, passed the caller-supplied optval directly to mbedtlssslgetpeercid without verifying the buffer was at least MBEDTLSSSLCIDOUTLENMAX default 32 bytes. mbedtlssslgetpeerci...

EUVD-2020-2489

Malware in sbrugna...

Malicious code in parse-async-theta-user-thread (npm)

The package parse-async-theta-user-thread was found to contain malicious code...

MAL-2025-28876 Malicious code in parse-async-theta-user-thread (npm)

The package parse-async-theta-user-thread was found to contain malicious code...

UBUNTU-CVE-2025-21718

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix timer races against user threads Rose timers only acquire the socket spinlock, without checking if the socket is owned by one user thread. Add a check and rearm the timers if needed. BUG: KASAN: slab-use-after-free...

CVE-2025-21718 net: rose: fix timer races against user threads

In the Linux kernel, the following vulnerability has been resolved: net: rose: fix timer races against user threads Rose timers only acquire the socket spinlock, without checking if the socket is owned by one user thread. Add a check and rearm the timers if needed. BUG: KASAN: slab-use-after-free...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from rosetimer competing with a user thread...

CVE-2021-0565

In wrapUserThread of AudioStream.cpp, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID:...

Code injection

An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions...

CVE-2020-10067 Integer Overflow In is_in_region Allows User Thread To Access Kernel Memory

A malicious userspace application can cause a integer overflow and bypass security checks performed by system call handlers. The impact would depend on the underlying system call and can range from denial of service to information leak to memory corruption resulting in code execution within the...

CVE-2020-10027

An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions...

CVE-2020-10027: Incorrect Comparison

An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions...

PT-2020-11870

Name of the Vulnerable Software and Affected Versions zephyr versions 1.14.0 through 2.1.0 and later versions. Description An attacker with code execution within a user thread can elevate privileges to that of the kernel. Recommendations For zephyr versions 1.14.0 through 2.1.0 and later versions...

Systrace Multiple System Call Wrappers Concurrency Vulnerabilities

No description provided by source. source: http://www.securityfocus.com/bid/25258/info Systrace is prone to multiple concurrency vulnerabilities due to its implementation of system call wrappers. This problem can result in a race condition between a user thread and the kernel. Attackers can explo...

Systrace - Multiple System Call Wrappers Concurrency Vulnerabilities

source: https://www.securityfocus.com/bid/25258/info Systrace is prone to multiple concurrency vulnerabilities due to its implementation of system call wrappers. This problem can result in a race condition between a user thread and the kernel. Attackers can exploit these issues by replacing certa...