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This repository documents 'Copy Fail', a severe local privilege escalation (LPE) flaw discovered in the Linux kernel by Theori's Xint Code team. The vulnerability has persisted for nearly a decade and affects major distributions including Ubuntu, Amazon Linux, and RHEL. The project provides a detailed technical writeup of how the flaw operates at the kernel level, alongside tested exploit scenarios for various modern kernel versions. It serves as a critical resource for security researchers and system administrators to understand and mitigate the threat.

Security researchers, penetration testers, and Linux system administrators focused on kernel security and vulnerability management.

• Detailed writeup: Explains the precise mechanics of the kernel bug and the memory corruption it causes.
• Verified exploit paths: Demonstrates successful privilege escalation across multiple enterprise Linux distributions.
• Historical context: Documents how the vulnerability survived unnoticed in the codebase for 9 years.
• Kernel version matrix: Provides a clear table of tested, vulnerable kernel versions for quick assessment.
• Security research artifact: Serves as a reference implementation for studying advanced kernel exploitation techniques.

Getting started: Read the technical writeup on xint.io and review the tested distro table.

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