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...

CVE-2026-31431-Report-Copy-fail-Vulnerability-

CVE-2026-31431 — Copy Fail: Linux Kernel Privilege Escalation Educational analysis of the Copy Fail vulnerability in the Linux kernel. Covers the memory corruption mechanism, privilege escalation flow, container escape, and defensive countermeasures. ⚠️ Disclaimer This repository is for educationa...

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...

CVE-2019-5489

CVE 2019-5489 This repository contains Page Cache Side Channel Attacks CVE-2019-5489 proof of concept for Linux. In order to evaluate page cache side channel, I have implemented covert channel between two processes. The sender process send confidential data to a receiver process via the page cach...

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:...

dirtyfrag-patches

Dirty Frag — Kernel Patches Patch series for the Dirty Frag vulnerability class discovered by Hyunwoo Kim @v4bel. Dirty Frag allows an unprivileged local user to overwrite arbitrary bytes of the page cache of read-only files e.g. /usr/bin/su, /etc/passwd leading to local privilege escalation to...

CVE-2026-31431-Checker-Mitigator

CVE-2026-31431 Checker & Mitigator A simple, safe vulnerability scanner and mitigation tool for CVE-2026-31431 aka "Copy Fail", a local privilege escalation vulnerability in the Linux kernel's AFALG cryptographic interface. Note - It is fully vibe coded Script About the Vulnerability CVE :...

Weekly-Breach-Investigation--006

Copy Fail Vulnerability CVE-2026-31431 Summary High-severity local privilege escalation flaw in the Linux kernel, allowing unprivileged users to gain root access by corrupting the in-memory page cache. Impacts Linux distributions since 2017 and poses serious risks to cloud and containerized...

CVE-2026-31431-Verificador-Exploit

CVE-2026-31431 - Linux Kernel Privilege Escalation Exploit Description Functional exploit for the CVE-2026-31431 vulnerability that allows local privilege escalation on Linux systems by exploiting a flaw in the kernel's AFALG cryptographic subsystem combined with the splice system call. Features...

CVE-2026-31431-PoC

Copy Fail - Python 3.9 PoC CVE-2026-31431 The public Copy Fail exploit wasn't compaitble with python 3.9, this one is. The original was modifed by replacing the unavailable os.splice with a lightweight ctypes polyfill. 🚨 LEGAL DISCLAIMER CFAA & Related Laws THIS SOFTWARE IS PROVIDED FOR EDUCATION...

linux-copy-fail-CVE-2026-31431

Linux Copy-Fail Analysis CVE-2026-31431 🛡️ This repository contains an in-depth analysis, Proof-of-Concept PoC, and laboratory test results for the CVE-2026-31431 vulnerability, popularly known as "Copy-Fail". Copy-Fail exploits a logic flaw in the Linux Kernel’s Crypto API AFALG combined with the...

cve-2026-31431-copyfail

CVE-2026-31431 — "Copy Fail" 🔐 Educational technical analysis of one of the most significant Linux kernel vulnerabilities since Dirty Pipe 2022. This repository is intended for research, study, and defense. No functional exploit is distributed here. Table of Contents What is it? For laypeople: th...

CVE-2026-31431-REVSHELL

█▀▀ ▄▀█ █ █ █▀█ █▀█ █▀█ ▀█▀ █▀░ █▀█ █ █▄▄ █▀▄ █▄█ █▄█ ░█░ CVE-2026-31431 • Linux Kernel LPE → Root Reverse Shell Overview FailRoot is a weaponized exploit for CVE-2026-31431 — an out-of-bounds write in the Linux kernel's crypto: algifaead subsystem. It chains a privilege escalation with a...

CVE-2026-31431

Copy Fail - CVE-2026-31431 This repository contains a small Linux local privilege escalation PoC for CVE-2026-31431, also known as "Copy Fail". The exploit targets the Linux kernel algifaead path in the AFALG userspace crypto API. It uses AFALG plus splice to coerce the kernel into writing into t...

CVE-2026-31431

CVE-2026-31431 — "Copy Fail" Local Privilege Escalation in the Linux Kernel crypto algifaead subsystem. Overview CVE-2026-31431, dubbed "Copy Fail", is a logic bug in the Linux kernel's authencesn cryptographic template algifaead. It allows an unprivileged local user to perform a controlled 4-byt...

CVE-2026-31431-PocC

CVE-2026-31431-PoC CVE-2026-31431 PoC reproduced in C, usable for exploitation when Python is not available on the target environment. Vulnerability Basic Information Vulnerability type: Linux kernel AFALG subsystem page cache poisoning, achieving local privilege escalation and possible container...

copy-fail-CVE-2026-31431

CVE-2026-31431 — Copy Fail 732 bytes. Any distro. Root. A straight-line logic flaw in the Linux kernel's authencesn cryptographic template enables an unprivileged local user to perform a precise, controlled 4-byte write into the page cache of any readable file — including setuid binaries. No race...

CVE-2026-31431-Copy-Fail---Vulnerability-Detection-Script

CVE-2026-31431 — Copy Fail — Vulnerability Detection Script Detection only. A working PoC already exists at copy.fail/exploit. This script is for sysadmins and security teams determining where they are vulnerable — or still vulnerable after patching. What's this about? On April 29th 2026, a...

copyfail

Copy Fail - CVE-2026-31431 PoC in C Local privilege escalation exploit for CVE-2026-31431 Copy Fail, written in C. How It Works 1. ELF parsing : resolves /usr/bin/su's entry point virtual address to a file offset via PTLOAD program headers 2. AFALG setup : binds to authencesnhmacsha256,cbcaes wit...

CVE-2026-31431-Advanced-Exploit

CVE-2026-31431 — Copy Fail Linux Kernel Page Cache Out-of-Bounds Write Vulnerability AFALG AEAD Scatterlist Chain Error Overview The Linux kernel algifaead interface contains a vulnerability that allows unprivileged users to write arbitrary data to the page cache of any readable file — completely...