kernel-CTF — Collection of Linux kernel exploitation CTF challenges covering buffer overflow, use-after-free, and race condition vulnerabilities for hands-on security learning. | Kitploit

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Kernel CTF Challenges

A collection of Linux Kernel exploitation challenges for learning kernel security concepts.

Requirements

Linux system (tested on Ubuntu)
Build essentials (gcc, make)
Linux headers for your kernel version

sudo apt-get update
sudo apt-get install build-essential linux-headers-$(uname -r)

Challenges

Level 1: Basic Buffer Overflow

Introduction to kernel module exploitation
Simple buffer overflow vulnerability
Good starting point for beginners
Located in /level1 directory

Level 2: Use-After-Free

More advanced kernel exploitation
Use-After-Free vulnerability in a note-taking system
Introduces kernel heap concepts
Located in /level2 directory

Level 3: Race Condition

Advanced kernel exploitation
Multiple race conditions in a counter management system
Focuses on parallel execution and timing attacks
Located in /level3 directory

Getting Started

Clone this repository:

git clone https://github.com/0xCD4/kernel-CTF.git
cd kernel-CTF

Choose a challenge level and navigate to its directory:

cd level1  # or level2, level3

Follow the README.md in each challenge directory for specific instructions.

Safety Notice

These challenges are for educational purposes only
Only run these modules in a testing environment
Kernel exploits can crash your system - use a VM if possible

Author

Created by shadowintel