theori-io/copy-fail-CVE-2026-31431Public

What is copy-fail-CVE-2026-31431?

Technical analysis and exploit code for CVE-2026-31431, a critical 9-year-old Linux kernel privilege escalation vulnerability.

What does copy-fail-CVE-2026-31431 do?

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 enterprise distributions including Ubuntu, Amazon Linux, RHEL, and SUSE. The project provides a detailed technical writeup detailing 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 the mechanics of the memory corruption and mitigate the threat.

Who is copy-fail-CVE-2026-31431 for?

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

How do I get started with copy-fail-CVE-2026-31431?

https://xint.io/blog/copy-fail-linux-distributions

How popular is copy-fail-CVE-2026-31431 on GitHub?

theori-io/copy-fail-CVE-2026-31431 has 4,074 stars and 911 forks on GitHub, and gained 2 stars in the last 7 days.

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 enterprise distributions including Ubuntu, Amazon Linux, RHEL, and SUSE. The project provides a detailed technical writeup detailing 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 the mechanics of the memory corruption and mitigate the threat.

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

• Detailed technical writeup: Explains the precise mechanics of the kernel bug and the specific memory corruption it causes.
• Verified exploit paths: Demonstrates successful local privilege escalation across multiple enterprise Linux distributions.
• Historical context: Documents how the vulnerability survived unnoticed in the Linux kernel codebase for 9 years.
• Kernel version matrix: Provides a clear table of tested, vulnerable kernel versions (e.g., Ubuntu 24.04, RHEL 10.1) for quick assessment.
• Security research artifact: Serves as a reference implementation for studying advanced kernel exploitation and memory manipulation techniques.

Getting started: https://xint.io/blog/copy-fail-linux-distributions

• public-apis/public-apis

  A collective list of free APIs

  486.1K stars · Python

• donnemartin/system-design-primer

  Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

  373.2K stars · Python

• practical-tutorials/project-based-learning

  Curated list of project-based tutorials

  285.8K stars · Python

• NousResearch/hermes-agent

  The agent that grows with you

  251.2K stars · Python

• yt-dlp/yt-dlp

  A feature-rich command-line audio/video downloader

  195.5K stars · Python

• microsoft/markitdown

  Python tool for converting files and office documents to Markdown.

  188.4K stars · Python