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Backdoor in wait4(): Linux kernel vulnerability

https://sudonull.com/backdoor-in-wait4-linux-kernel-vulnerability

Analysis of a real backdoor in the Linux kernel from 2003: how an assignment error in wait4() opened root access. Lessons for developers: code review, Git, fuzzing. Study the details of the attack.

Windows Kernel Policy: Only WHCP Drivers from 2026

https://sudonull.com/windows-kernel-policy-only-whcp-drivers-from-2026

Microsoft tightens driver trust in Windows 11 and Server 2025 kernel. Rejection of outdated certificates, audit mode, AppLocker. Details of changes for developers and admins — read and prepare.

OptimaOS on Rust: single kernel for all platforms

https://sudonull.com/optimaos-on-rust-single-kernel-for-all-platforms

Explore OptimaOS architecture — kernel on Rust without forks for desktop, servers and Edge. Separation of mechanisms/policies, Linux ABI, memory safety. Detailed breakdown for developers.

Anticheats: user-mode and kernel-mode limitations

https://sudonull.com/anticheats-user-mode-and-kernel-mode-limitations

Breakdown of anticheat levels, DLL injection detection and DMA. Technical principles for developers. Study the weaknesses and evolution of game protection systems.

SystemRescue 13.0: kernel updates and HiDPI

https://sudonull.com/systemrescue-13-0-kernel-updates-and-hidpi

New features in SystemRescue 13.0: Linux 6.18 LTS, bcachefs 1.37, yq, HiDPI scaling. Ideal for system recovery. Download ISO and test it.

From other projects

How to Take Lecture Notes Correctly: 5 Steps

https://ymaho.com/how-to-take-lecture-notes-correctly-5-steps

Learn to take lecture notes so you remember 50% more. 5 steps: Cornell method, mind maps, and active recall. Start learning more effectively!

From the web

Kernel (operating system) - Wikipedia

https://en.wikipedia.org/wiki/Kernel_%28operating_system%29

A kernel is a core program that controls hardware and software resources and mediates conflicts between processes. Learn about kernel architecture, memory management, device management, and more.

The Linux Kernel Archives

https://www.kernel.org/

3 days ago · This site is operated by the Linux Kernel Organization, a 501 (c)3 nonprofit corporation, with support from the following sponsors.

Kernel - Wikipedia

https://en.wikipedia.org/wiki/Kernel

Kernel is a term that has various meanings in different fields, such as computing, mathematics, science, and companies. Learn about the different types of kernels, their definitions, examples, and applications.

GitHub - torvalds/linux: Linux kernel source tree · GitHub

https://github.com/torvalds/linux

Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software.

Kernel in Operating System - GeeksforGeeks

https://www.geeksforgeeks.org/operating-systems/kernel-in-operating-system/

Apr 23, 2026 · The kernel manages system resources , such as the CPU, memory and devices, ensuring everything works together smoothly and efficiently. It handles tasks like running programs, accessing files and connecting to devices like printers and keyboards.

KERNEL Definition & Meaning - Merriam-Webster

https://www.merriam-webster.com/dictionary/kernel

Oct 28, 2026 · The meaning of KERNEL is the inner softer part of a seed, fruit stone, or nut. How to use kernel in a sentence.

The Linux Kernel documentation

https://docs.kernel.org/

Learn how to develop, use and administer the Linux kernel, the core of the Linux operating system. Find manuals, guides, tools, APIs, licensing rules and more for various CPU architectures and firmware platforms.

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