#kernel

Windows Beneath the Surface — Kernel Architecture Every Security Professional Must Own

From ntoskrnl.exe to PatchGuard, VBS to BYOVD — The Complete Technical Map of How Windows Actually Works, Why the CrowdStrike Incident Was…

Linux OS Shell: Google Cybersecurity Certificate 4/9

The third submodule of Module 2: Linux Operating System covers the Shell. The topics covered in this write-up are:

The kernel: what we actually built, and what it cost to get there

The model is the least interesting part. Here is the data layer, the retrieval, the memory, and why two full versions got thrown out.

GhostLock Linux Kernel Flaw: Critical Root Access Risk

GhostLock Linux Kernel Flaw — Why It Matters

Part 1: The Linux Under Your Android — 5 Concepts Every Developer Must Know

Learn how Linux powers Android apps through processes, permissions, and security.

🪄Spyder — AutoRun Registry Key Could Not Be Parsed !

When trying to open Spyder IDE, you may encounter the following error: “The value specified in an AutoRun registry key could not be…

The Linux Concept Journey — TAP (Network TAP)

The universal TUN/TAP driver was created by merging drivers from Solaris, Linux, and BSD (in 2000). While both are virtual network devices…

How The Linux Kernel and System Calls Work?

1. Introduction:

NIC Queues, RSS, RPS, and RFS — Why They Matter More Than You Think

Part 2 of the Linux Networking Stack series. Read Part 1: How a Packet Travels Through the Linux Kernel first.

Unikernels on Bare Metal: What the Numbers Actually Say

Picking up from where I left off, I wanted to see how things work on a dedicated bare metal server. The expectation was that Nanos would…

The Linux Concept Journey — futex (Fast Userspace Mutex)

A futex (Fast Userspace Mutex) is a Linux kernel synchronization primitive used to build efficient locking mechanisms (like…

Make a Neural Network Infinitely Wide and It Stops Being a Neural Network.

Everything mysterious about deep learning — the non-convex landscape, the strange training dynamics, the sense that nobody quite knows why…

Chapter-3 : Horrors of Virtual Memory [RexOS Dev]

Github Link: https://github.com/Arpit-Mohapatra007/RexOS-riscv

Applockerflter/SliffDriver.sys : Full Kernel Exploit Chain — From Driver Recon to SYSTEM Shell

1. What Even Is a Kernel Driver?

GPUs Explained Simply: The Hidden Architecture Powering AI and Games

The Invisible Managers: เมื่อ Kernel และ OS คือสุดยอดบทเรียนการบริหารองค์กรที่คุณควรรู้

ลองนึกถึงผู้จัดการในฝันของคุณดูครับ… เขาคนนั้นเป็นอย่างไร?

Three Ways to Build an Agent: Workflows, Kernels, and RL-Trained Agents

Three independent approaches to building agentic systems — separated by a single question: where does the intelligence actually live?

RTOS Nedir?

İşletim Sistemi Nedir?

Wayland : The Way Ahead

Wayland is the beginning of new era. It has been making several changes that are making complex setups possible.

IPC Vs RPC — Ways for program/service to communicate

Hey guys, here is a smallie blog to share my understanding of IPC and RPC from what I gathered by reading site to site, so minifying it for…

Exploiting a Signed Vulnerable Kernel Driver for Ring-0 Privilege Escalation

Introduction

I Read 346 Pages of the Metal 4 Spec to Beat My Own GPU Kernel.

You’ve written a kernel. It’s correct. It’s benchmarked. It’s your best work.

Demystifying GPU’s: As a Silicon Mystic!

Glossary:

Vulnerabilità nel kernel Linux rimasta nascosta per dieci anni

Una falla di sicurezza, conosciuta come CVE-2026–46333, è stata scoperta dai ricercatori di Qualys nel kernel Linux, colpendo distribuzioni…

🌟Kernel Restaking » Kelp rsETH & Gain Vaults

Kernel DAO Guide: Restake KERNEL, Mint rsETH & Use Gain

Bypassing initramfs and a Disappeared NVMe SSD: A Cascading Ubuntu Linux Troubleshooting Guide

Have you ever forced your Linux laptop to shut down, only to be greeted by a daunting initramfs emergency shell on the next boot?

Why I Switched to Linux

The story of how and why i switched to Linux

nftables - High-performance NAT & Filtering

Nftables is the modern packet filtering and classification framework in the Linux kernel.

Fragnesia: The New Linux Kernel LPE That Turns Page Cache Corruption Into Root Access

A new Linux privilege escalation flaw shows why kernel security is no longer just a server problem

Creating a KVM Virtual Machine Using an Ubuntu ISO

This guide walks you through creating a KVM virtual machine using an ISO image from the Linux terminal — no GUI required.

When AI Ignores Kernel Rules: Topological Validation for GNN Schedulers

Graph Neural Networks are powerful for optimizing task scheduling. But without formal guarantees, they can cause the exact problem they…

Why we bet the company on eBPF.

When I started looking at how to stop data from walking out the door, every option on the table felt like a compromise from 2015.

How i fixed my broken Arch Linux update for the 3rd time in a year

Backstory

Checklist: Verifying Generated Kernels

Checklist for verification

My eBPF Program Compiled with Clang… but the Kernel Verifier Rejected It

I compiled my XDP code successfully using clang. The object file built cleanly with no compilation errors.

Custom Embedded Linux From Scratch( Phase 5): Integration, Deployment, and Booting the BeagleBone…

In this final phase, we will assemble all pieces onto an SD card, configure the boot process, and bring our custom Linux system to life.

Custom Embedded Linux Phase 4: Constructing the Root Filesystem with Buildroot

In our previous phases, we built a

Custom Embedded Linux Phase 2: Compiling U-Boot for the BeagleBone Black

In this article we deep down the U-boot using the custom toolchain and understand how processor wakes up and need of multi-stage booting.

Linux Kernel Exploitation for Beginners: Arbitrary Function Pointer Call

In this example, exploitation is performed on Linux kernel 5.15 running on Lubuntu 20.04.5 with Linux kernel protections disabled. The…

Linux Is NOT an Operating System — Here’s What It Actually Is

If someone asked you right now, “What is Linux?”, what would you say?

Demand Paging — A busy restaurant!

Written by Prashanth Kondedath

malloc() — a deep dive

Most of us use malloc() and free() every day without thinking twice. What goes behind the scene is so fascinating !

I Spent Years Writing CUDA Kernels. This Editor Changed Everything.

TL;DR: RightNow is a code editor built for GPU kernel development. It has AI that understands your GPU, a 86+ architecture emulator…

Exploring eBPF Tracing with Real World Scenarios

Exploring eBPF tracing opens new frontiers for observability and performance analysis in modern Linux systems, allowing us to inspect…

Theory Rides CPU — Understanding Memory Allocators on Modern Processors— I (The Problem Space)

Introduction

Best Tools for CUDA Development in 2025: A Complete Guide

TL;DR: CUDA development in 2025 spans from NVIDIA’s official toolkit and Nsight profilers to VS Code extensions, JetBrains IDEs, and…

Sysctl Performance Tuning Optimization Strategies on Linux

🏁 Introduction

Deep Dive into Kernel Module Development on Linux Systems

The decision to delve into kernel module development represents a calculated architectural pivot, moving computation and system interaction…

From touch LCD to Rust Kernel Driver: A Kernel Hacking Odyssey — Part 1

I’m here to share my journey through a series of (somewhat feeble) attempts to interface a simple LCD with my old Raspberry Pi 4B+. Why…

functions guaranteed to be safely reentrant for use in signals