Kernel Security
The latest Kernel Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-43267: Flaw in Realtek Wi‑Fi Driver Lets Attackers Crash Linux via Zero Beacon
A newly disclosed Linux kernel vulnerability, CVE-2026-43267, exposes a critical oversight in the Realtek rtw89 Wi‑Fi driver: a zero‑beacon‑interval can trigger a division‑by‑zero error,...
BPF signed division bug in Linux kernel 5.10-6.8 allows arbitrary code execution
A newly disclosed vulnerability in the Linux kernel's BPF subsystem, tracked as CVE-2026-31525, exposes a subtle but critical mismatch between the BPF verifier and interpreter when handling signed...
CVE-2026-31503: Linux Kernel UDP Wildcard Bind Conflict Misses hash2 Threshold
Linux systems are facing a new networking vulnerability that underscores how subtle logic errors can be just as dangerous as memory corruption. Tracked as CVE-2026-31503, this kernel bug affects UDP...
AppArmor bounds check flaw CVE-2026-23407 crashes Linux kernels via malformed policies
A critical memory safety vulnerability in the AppArmor Linux security module, tracked as CVE-2026-23407, exposes systems to kernel-level denial of service attacks and potential integrity compromise....
Linux Bluetooth SCO Use-After-Free Vulnerability (CVE-2026-31408) Explained: Technical Details and Community Response
A fresh use-after-free vulnerability has been discovered in Linux's Bluetooth stack, tracked as CVE-2026-31408. The flaw resides in one of the more complex areas of kernel networking: the SCO...
Linux NFC Rawsock Vulnerability CVE-2026-23372: Workqueue Race Condition Poses UAF Risk
A critical vulnerability in the Linux kernel's NFC stack has been identified and patched, addressing a race condition in the rawsock path that could lead to use-after-free (UAF) scenarios. Designated...
CVE-2026-23343: Microsoft's Linux Kernel XDP Patch Fixes Critical Signed Tailroom Vulnerability
Microsoft has assigned CVE-2026-23343 to a Linux kernel vulnerability that exposes systems to potential denial-of-service attacks through the XDP (eXpress Data Path) networking subsystem. The...
CVE-2026-23395: Linux Bluetooth L2CAP eCred Vulnerability Explained and Patched
CVE-2026-23395 reveals a critical vulnerability in the Linux kernel's Bluetooth L2CAP implementation that could allow attackers to crash systems or potentially execute arbitrary code. The flaw,...
CVE-2026-23213: How AMD's Linux GPU Kernel Fix Impacts Windows Users and System Stability
CVE-2026-23213 reveals a critical vulnerability in AMD's GPU driver architecture that extends beyond Linux systems to affect Windows users through shared hardware components. The security advisory...
Linux Kernel Audit Fix: getxattrat and listxattrat Syscalls Now Properly Mapped to Read Class
A recent upstream Linux kernel patch has addressed a significant auditing oversight that persisted for years. The "at" variants of two extended-attribute read system calls—getxattrat() and...
CVE-2026-23066: Critical Linux Kernel RxRPC Locking Bug Exposes Systems to Memory Corruption
A subtle locking bug in the Linux kernel's RxRPC implementation can corrupt internal socket queues and trigger use-after-free conditions, creating a critical security vulnerability tracked as...
BYOVD Attacks: How Hackers Exploit Windows Driver Trust to Bypass Security
The Bring Your Own Vulnerable Driver (BYOVD) attack technique has evolved from a theoretical red-team exercise to a practical, high-impact method used in real-world intrusions, turning Windows' own...