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:...

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...

copyfail-guard

copyfail-guard A zero-dependency Python CLI that checks whether a Linux host appears exposed to CVE-2026-31431 "Copy Fail" without running an exploit. It can also apply a conservative temporary mitigation when the affected component is loadable as a kernel module. Supports Debian/Ubuntu,...

cve-2026-31431

CVE-2026-31431 "Copy Fail" — IR Playbook & Detection Package Production-ready IR playbook, detection rules, and SOC triage guidance for CVE-2026-31431 — a Linux kernel local privilege escalation in the algifaead crypto interface. Includes an interactive HTML playbook , Sigma rules, auditd configs...

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...

copyfail-check

copyfail-check Shell scripts to detect Linux kernel vulnerabilities, check mitigation status, and guide remediation — designed to run locally or across fleets via SSH, Ansible, or pssh. CVE-2026-31431 — Copy Fail Copy Fail is a high-severity local privilege escalation LPE vulnerability in the Lin...

CVE-2026-31431-mitigacion

CVE-2026-31431 — Complete Technical Analysis Classification: Local Privilege Escalation LPE — Linux Kernel CVSS: 7.8 High Impact: unprivileged user → root Affected module: algifaead AFALG kernel subsystem Table of Contents 1. Why is it vulnerable? 2. Which versions are affected? 3. How it is...

copy-fail-fix

copy-fail-fix Per-distro mitigation scripts for CVE-2026-31431 "Copy Fail" — a Linux kernel algifaead local privilege escalation that affects essentially every distro shipped since 2017. Each script either installs a patched kernel from your distribution's repos when one is available or, if not,...

cve-2026-31431-ansible

CVE-2026-31431 "Copy Fail" — Ansible Mitigation Recipe Detect and apply the kernel-cmdline mitigation for CVE-2026-31431 "Copy Fail" across a Debian / Ubuntu / RHEL-family fleet using Ansible. The CVE is a local privilege-escalation flaw in the Linux kernel's algifaead AFALG interface. Any...

cve-2026-31431-algif-aead-remediator

CVE-2026-31431 / GHSA-2274-3hgr-wxv6 — algifaead Remediator Severity: High CVSS 7.8 — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Background CVE-2026-31431 is a local privilege escalation vulnerability in the Linux kernel's algifaead module AFALG AEAD crypto socket interface. A low-privileged...

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: "Copy Fail" - Linux Kernel Local Privilege Escalation 📢 Disclaimer This repository is strictly for educational and cybersecurity research purposes. The exploit code is analyzed to understand the underlying vulnerability, facilitate patching, and develop defensive strategies. Do no...

Linux-CopyFail-C-Version-CVE-2026-31431

Linux CopyFail- C Version - CVE-2026-31431 Clean C version of Copy Fail CVE-2026-31431 - Linux Local Privilege Escalation exploit using AFALG + authencesn + splice primitive. Overwrites the page cache of /usr/bin/su with a tiny setuid shellcode to gain root privileges. Educational proof-of-concep...

CVE-2026-31431-Analysis-and-Fix

CVE-2026-31431 "Copy Fail" — Technical Deep Dive Severity: CVSS 7.8 High Class: Local Privilege Escalation Introduced: Linux 4.14 2017 Fixed: commit a664bf3d603d 1. Background CVE-2026-31431 is a local privilege escalation flaw in the Linux kernel's algifaead module — the AEAD socket interface of...

block-copyfail

block-copyfail Prova di concetto di mitigazione runtime per CVE-2026-31431 "Copy Fail" — un'escalation di privilegi nel kernel Linux tramite il template crittografico authencesn in algifaead. A differenza del blacklisting dei moduli, questo non richiede riavvio. Un programma BPF LSM aggancia...

copyfail-CVE-2026-31431

copyfail-CVE-2026-31431 Extended version of the CVE-2026-31431 "Copy Fail" Linux Local Privilege Escalation PoC. Credits Original discovery & exploit: Theori / Xint — copy.fail Original repo: theori-io/copy-fail-CVE-2026-31431 Extended by: Trex1e What's different in this version Automatically...

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

CVE-2026-31431 — From a NULL Pointer to Root: Exploiting AFALG AEAD in the Linux Kernel Bug class: Null pointer dereference → heap OOB write → credential overwrite Affected subsystem: net/alg/afalg.c Impact: Local Privilege Escalation unprivileged user → root Affected kernels: Linux 4.4 – 4.9...

copy_fail

Copy Fail — CVE-2026-31431 CVE-2026-31431 Copy Fail is a local privilege escalation vulnerability in the Linux kernel's algifaead module AFALG subsystem. A logic flaw introduced in August 2017 allows any unprivileged local user to write 4 controlled bytes into the page cache of any readable file...

CVE-2026-31431

CVE-2026-31431 "Copy Faill" CVE-2026-31431 Archive and Analysis. Source code for attack Testing Sniffing Tools for the potential Vulnerability. Solution 禁用内核模块 echo "install algifaead /bin/false" /etc/modprobe.d/disable-algif-aead.conf 卸载已加载模块 rmmod algifaead 2/dev/null...