kernel security

Microsoft’s recent push to harden Azure Linux with a new “OS Guard” capability marks a notable shift in how cloud providers are thinking about host-level protections for container workloads, combining run‑time immutability, code integrity checks, and mandatory access control into an opinionated...

Windows 11’s insistence that low-level drivers must be signed is the single most effective consumer-facing defense Microsoft has built for the Windows kernel — and it’s also one of the clearest examples of security that feels, at times, actively hostile to the people who own the hardware it runs...

Microsoft quietly ended one of Windows’ most enduring visual warnings this summer: the Blue Screen of Death — the cobalt banner that for decades signaled catastrophic system failure — has been replaced with a streamlined black “unexpected restart” screen as part of Windows 11’s ongoing...

Windows Hyper‑V contains a vulnerability tracked as CVE‑2025‑48807 that, according to the vendor advisory, stems from improper restriction of a Hyper‑V communication channel to its intended endpoints and can be abused by an authorized attacker to execute code locally on an affected host. This...

Title: CVE-2025-53788 — What the WSL2 TOCTOU kernel vulnerability means for Windows users (deep technical briefing + practical guidance) Executive summary On August 2025’s Patch cycle Microsoft confirmed a Windows Subsystem for Linux (WSL2) kernel security fix identified as CVE‑2025‑53788...

Microsoft is set to enhance the stability and security of Windows 11 with the upcoming 25H2 update by implementing stricter driver certification standards. A key component of this initiative is the mandatory static analysis of all drivers, a process designed to identify potential issues in...

In July 2024, a catastrophic event unfolded when a faulty update from CrowdStrike's Falcon security software rendered approximately 8.5 million Windows devices inoperable. This incident, which led to widespread disruptions across critical sectors such as healthcare, aviation, and finance...

A critical security vulnerability, identified as CVE-2025-49727, has been discovered in the Windows Win32K Graphics (GRFX) subsystem. This heap-based buffer overflow allows authorized local attackers to elevate their privileges, potentially leading to full system compromise. Understanding the...

The recent disclosure of CVE-2025-49667, a critical elevation of privilege (EoP) vulnerability in the Windows Win32 Kernel (Win32K) Subsystem, has cast a spotlight on the ongoing security challenges inherent in fundamental components of the Windows operating system. Security researchers and IT...

Windows Virtualization-Based Security (VBS) has been widely touted by Microsoft as a foundational technology for modern Windows platform security, providing powerful separation of sensitive processes and protecting against a wide variety of exploits. However, recent developments have brought...

The Windows Kernel serves as the core component of the Windows operating system, managing system resources and hardware communication. Its integrity is paramount to system security. However, vulnerabilities within the kernel can expose sensitive information, potentially leading to further system...

Microsoft’s confirmation of Windows 11 version 25H2 didn’t arrive via a splashy keynote or glossy marketing blitz. Instead, the next evolution of the world’s dominant desktop operating system tiptoed into public view—surfacing primarily in updated technical documentation and new metadata within...

For nearly four decades, the infamous Blue Screen of Death loomed as both a source of dread and a rite of passage for PC users—a jarring interruption that signaled the end of a session, the start of frantic troubleshooting, or the loss of unsaved work. Now, in one of the most visually striking...

In a move set to spark nostalgia and debate among millions of Windows users, Microsoft is officially retiring the iconic Blue Screen of Death (BSOD) once more, this time trading its familiar azure hue for a minimalist black void. The change, confirmed by Microsoft as part of its ongoing efforts...

AMD’s continual push to keep its Ryzen platforms secure and performing at their best took another step forward with the release of chipset driver version 7.06.02.123—available now for Windows 10 and Windows 11 users. This rollout comes on the heels of a major firmware patch addressing the...

A recent security analysis has unveiled a method to bypass Kernel Address Space Layout Randomization (KASLR) protections in Windows 11 24H2 by exploiting an HVCI-compatible driver with physical memory access capabilities. This research, published by security expert Yazid on June 9, 2025...

In the constantly shifting landscape of Windows security vulnerabilities, one critical flaw has attracted significant scrutiny: a heap-based buffer overflow within the Windows Common Log File System Driver (CLFS), identified as CVE-2025-32713. Not only does this vulnerability underscore the...

Windows Task Scheduler, a core component of the Windows operating system, has once again come under scrutiny following the disclosure of CVE-2025-33067—a significant Elevation of Privilege (EoP) vulnerability. The flaw, rooted in improper privilege management within the Windows Kernel, enables...

At OffensiveCon 2025, held at the Hilton Berlin, security researchers presented a groundbreaking analysis titled "Hunting For Overlooked Cookies In Windows 11 KTM And Baking Exploits For Them." This presentation delved into the intricacies of the Windows 11 Kernel Transaction Manager (KTM)...

Few stories in the computing world capture the complex evolution of Microsoft's relationship with open source like the saga of the Windows Subsystem for Linux (WSL). With the company's recent move to open-source “almost everything” in WSL, this announcement represents both a technical milestone...