CVE-2026-31431

CVE-2026-31431: Copy Fail PoC + ARM64 Validation Copy Fail is a Linux local privilege escalation published by Theori/Xint as CVE-2026-31431. The project page describes a logic bug in authencesn that can be reached through AFALG and splice, producing a small page-cache write against a setuid binar...

copyfail-rs

copyfail-rs Copy Fail exploit CVE-2026-31431 but in Rust, a critical vulnerability chaining AFALG and splice to achieve a 4-byte page cache write, leading to local privilege escalation on major Linux distributions. Based on the research and PoC by Xint Code. Disclaimer !CAUTION This project is fo...

copy-fail-CVE-2026-31431

Vulnerability Description Root Cause In 2017, the Linux kernel crypto module authencesn introduced an in-place optimization for AEAD Authenticated Encryption with Associated Data operations. This optimization caused read-only pages in the page cache to be incorrectly placed into a writable...

CopyFail-for-dummies

Copy Fail / CVE-2026-31431 — Research Notes Overview This repository contains a cleaned-up technical diagram and supporting notes for the Linux kernel vulnerability commonly referred to as Copy Fail and tracked as CVE-2026-31431. The purpose of this material is: to explain the bug mechanism at a...

copy-fail_LPE_Interactive

CVE-2026-31431 Copy Fail Exploit Linux kernel page cache poisoning exploit tool with support for non-interactive command execution. Vulnerability Overview CVE-2026-31431 is a logic flaw in the Linux kernel, present in the authesn AEAD algorithm implementation. Through the AFALG and splice system...

copy-fail-CVE-2026-31431-poc

CVE-2026-31431 — Copy Fail Proof of Concept This repository contains a Proof of Concept exploit for CVE-2026-31431 , a high-severity Linux kernel local privilege escalation vulnerability that allows any unprivileged local user to gain root access. The flaw, dubbed “Copy Fail”, resides in the...

COPY-FAIL

Copy Fail -- CVE-2026-31431 Hardened C implementation for redteam and authorized penetration testing operations. ⚠️ Legal Notice: This tool is intended solely for authorized security research, authorized penetration testing, and defensive analysis. Use on systems you own or have explicit written...

copy-fail-CVE-2026-31431

CVE-2026-31431 — Copy Fail Linux kernel local privilege escalation via AFALG + splice page-cache overwrite For authorized security research, penetration testing, and educational purposes only. Do not use against systems you do not own or have explicit written permission to test. Technical Writeup...

CVE-2026-31431-Exploit

CVE-2026-31431 "Copy Fail" Exploit A professional proof-of-concept for the CVE-2026-31431 vulnerability, a critical flaw in the Linux kernel's algifaead / authencesn page-cache handling. Overview The CVE-2026-31431 vulnerability, colloquially known as "Copy Fail" , involves a page-cache...

CVE-2026-31431

🔐 CVE-2026-31431 - Kernel Exploitation Research Framework Modular framework for studying a Linux privilege escalation LPE vulnerability based on AFALG + Page Cache Injection techniques. 🎯 Objective This project is designed for: Research of Linux kernel vulnerabilities Teaching real exploitation...

CVE-2022-0847-POC

CVE-2022-0847 CREDITS: vulnerability author: Max Kellermann max kellermann explanation: https://dirtypipe.cm4all.com/ RESOURCES: PAGE CACHE: https://manybutfinite.com/post/page-cache-the-affair-between-memory-and-files/ PIPE:...

copyfail-rs

copyfail-rs Rust implementation of CVE-2026-31431 Copy Fail — a Linux kernel page-cache write primitive via AFALG splice. 中文文档 / Chinese README CVE-2026-31431 The Linux kernel's algifaead implementation allows an unprivileged user to write arbitrary data into the page cache of any readable file v...

CVE-2026-31431_CopyFail_LinuxKernel_LPE

CVE-2026-31431 — Copy Fail Linux Kernel LPE Educational rewrite of the Theori/Xint proof-of-concept for CVE-2026-31431, a local privilege escalation vulnerability in the Linux kernel's algifaead crypto socket interface. Affects every mainline kernel from 4.14 July 2017 through 6.18.21, and the 6....

Copy-Fail---CVE-2026-31431

CVE-2026-31431 - Copy Fail - Detection Script Python script to check whether a Linux system is vulnerable to the CVE-2026-31431 Copy Fail flaw, a local privilege escalation in the Linux kernel. The flaw in brief Since 2017 commit 72548b093ee3, the kernel's algifaead cryptographic module has handl...

dirty-pipe-poc

POC Exploit to add user to Sudo for CVE-2022-0847 Dirty Pipe Vulnerability This repo is based of the Vulnerability, Writeup and Exploit produced by Max Kellermann all found here. Just like everyone I had to take advantage of playing with the worlds most trivial to repro Priv Esc the blog post doe...

Copy-Fail-CVE-2026-31431-Statically-PoC

Copy-Fail CVE-2026-31431 Static Go PoC This repository contains a Go port of the public Python proof of concept from theori-io/copy-fail-CVE-2026-31431. The program is Linux-only. It uses the Linux AFALG interface, AEAD control messages, and splice2 to preserve the behavior of the original PoC...

copyfail-c

copyfail-c A minimal C reproduction for researching Copy Fail CVE-2026-31431. This repository contains a compact C implementation built around the Linux kernel AFALG interface for vulnerability research, behavior analysis, and controlled reproduction. Repository layout . ├── src/ C source ├── dis...

Copy-Fail

CVE-2026-31431 – "Copy Fail" Reachability Checker A simple, safe Python script that determines whether a Linux system is vulnerable to CVE-2026-31431 "Copy Fail", a local privilege escalation that affects all major distributions since kernel 4.14. ⚠️ What is Copy Fail? CVE-2026-31431 is a...

PATCH-CVE-2026-31431-Ubuntu_Debian

🛡️ CVE-2026-31431 Copy Fail Mitigation - Linux Kernel This repository contains scripts designed to neutralize the critical vulnerability CVE-2026-31431 , nicknamed "Copy Fail" , on Ubuntu systems. !IMPORTANT Compatibility: These scripts are tailored for and tested on Ubuntu Server 24.04 LTS. While...

copy-fail-CVE-2026-31431-shell

CVE-2026-31431 - copyfail shell Local privilege escalation via AFALG socket + splice page-cache overwrite. Overwrites a read-only SUID binary /usr/bin/su with a minimal ELF that calls setuid0 + execve"/bin/sh". No race condition, no per-distro offsets, single shot. $ ./copyfailexp.sh Kernel:...