copy-fail-mitigate-no-reboot

copy-fail-mitigate Minimal no-reboot mitigation helper for Copy Fail / CVE-2026-31431. This script disables the vulnerable algifaead module path and attempts to unload the module immediately. It also performs a best-effort page-cache eviction for /usr/bin/su. This is a mitigation, not a kernel fi...

CVE-2026-31431

CVE-2026-31431 — "Copy Fail" Local Privilege Escalation Overview CVE-2026-31431 is a local privilege escalation vulnerability in the Linux kernel's algifaead subsystem. The authencesn AEAD implementation performs an in-place decrypt via splice2, placing a page-cache page into the destination...

copyfailautopatch

copyfailautopatch Detect and optionally mitigate CVE-2026-31431 "Copy Fail" on a Linux host. The vulnerability is a page-cache write primitive reachable through the AFALG socket family using the authencesnhmacsha256,cbcaes AEAD transform. This script reproduces the same primitive Theori...

CVE-2026-31431-Copy-Fail-Detection-Toolkit

CVE-2026-31431 Copy Fail Detection Toolkit Detection and analysis toolkit for CVE-2026-31431 "Copy Fail" - a critical Linux Local Privilege Escalation vulnerability affecting distributions from 2017 onwards. Vulnerability Overview CVE-2026-31431 exploits a logic flaw in the Linux kernel's algifae...

dirty-frag-check

Dirty Frag check CVE-2026-43284 / CVE-2026-43500 Read-only checker for the "Dirty Frag" Linux kernel local-root vulns CVE-2026-43284, CVE-2026-43500. Checks kernel version, module state, KernelCare livepatch, and any modprobe blacklist you've added. Doesn't run exploit code. Companion to...

CVE-2026-31431

CVE-2026-31431 Copy Fail Checker Checks whether a Linux host is vulnerable to CVE-2026-31431 and applies mitigation. Files checkcve202631431.yml - Ansible playbook to verify and patch revertcve202631431.yml - Ansible playbook to undo mitigation runcheck.sh - Script to run verification locally or...

Copy_Fail_CVE-2026-31431_test_and_fix

Usage python3 testCVE-2026-31431.py Fix for Almalinux 9 / 10 until kernel update arrive sudo grubby --update-kernel ALL --args="initcallblacklist=algifaeadinit" sudo reboot Fix for Debian / Ubuntu until kernel update arrive as root echo "install algifaead /bin/false"...

copyfail-go

CopyFail Go Most Linux LPEs need a race window or a kernel-specific offset. Copy Fail is a straight-line logic flaw — it needs neither. The same 732-byte Python script static Go binary roots every Linux distribution shipped since 2017. A Go implementation of CVE-2026-31431. In case you need a...

Copy-Fail_Detect_and_mitigate_CVE-2026-31431

Copy Fail - CVE-2026-31431 Detector and Mitigator Detect exposure to CVE-2026-31431 Copy Fail and optionally apply a host-level mitigation by disabling the algifaead kernel module on vulnerable systems. What this repo provides copyfail-check.sh — checks kernel patch status, runtime module exposur...

cve-2026-31431-fleet-remediator

CVE-2026-31431 Fleet Audit and Remediation Tool 中文说明 This project is a fleet-scale orchestrator for auditing and remediating CVE-2026-31431 on Linux hosts in enterprise/internal networks. Batch SSH login to multiple hosts Risk evidence collection and status classification Temporary mitigation...

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-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...

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...

almalinux-fix-cve-2026-31431

CVE-2026-31431 algifaead and Dirty Frag CVE-2026-43284 Vulnerability Fix Updates the system to close the CVE-2026-31431 algifaead and Dirty Frag CVE-2026-43284 vulnerabilities found in the Linux kernel and automatically sets the secure kernel version as the default. English: This script...

cve-2026-31431-mitigation

CVE-2026-31431 seccomp Mitigation A lightweight, reversible seccomp-based mitigation for CVE-2026-31431, a local privilege escalation vulnerability in the Linux kernel's algifaead / authencesn crypto subsystem. 中文文档 Vulnerability Overview Type: Local Privilege Escalation LPE Affected Component:...

copy-fail

Copy Fail PoC English Python PoC for CVE-2026-31431 , intended for controlled laboratory testing on authorized Linux systems. For use only in your own environments, labs, or systems where you have explicit permission. Do not run this code against third-party systems. Description copy-fail.py chec...

CVE-2026-31431-mitigation

CVE-2026-31431-mitigation This repository holds the source code for our eBPF-based mitigation against CVE-2026-31431, also known as "copy.fail". More info available at https://copy.fail The motivation behind building this solution was to fulfill the need for a reboot-less mitigation for...

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

CVE-2026-31431 - Copy Fail PoC Educational Proof of Concept for CVE-2026-31431 , also known as Copy Fail , a Linux kernel local privilege escalation vulnerability involving the AFALG / algifaead cryptographic interface. !WARNING This repository is provided strictly for educational, defensive, and...

Copyfail-sh

copyfail-sh No race. No offsets. No prebuilt binary to blindly trust. A bash implementation of CVE-2026-31431 Copy Fail. The script compiles a minimal C helper inline at runtime. The bash layer handles architecture detection, payload decompression and target selection; the C layer does the actual...