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...

CVE-2026-31431

CopyFail2 CVE-2026-31431 - Python Implementation Python port of the CopyFail2 kernel exploit leveraging xfrm ESP-in-UDP MSGSPLICEPAGES no-COW fast path for unprivileged Linux local privilege escalation. Replaces a nologin/false entry in /etc/passwd with a passwordless uid-0 user and drops into a...

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:...

CVE-2026-31431-Copy-Fail---Advanced-LPE-Proof-of-Concept---C-Rewrite

CVE-2026-31431 "Copy Fail" - Advanced LPE Proof-of-Concept - C Rewrite An advanced, byte-perfect Local Privilege Escalation LPE Proof-of-Concept PoC for CVE-2026-31431 , exploiting a logic flaw in the Linux kernel's cryptography subsystem algifaead. This repository contains a highly optimized C...

Linux-copy-fail-CVE-2026-31431

CVE-2026-31431 — Copy Fail Linux Privilege Escalation Overview This repository presents a technical overview and demonstration of CVE-2026-31431 , commonly referred to as Copy Fail , a Linux kernel vulnerability that enables local privilege escalation. The vulnerability affects a wide range of...

CVE-2026-31431-live-process-code-injection

CVE-2026-31431 Copy Fail — Live Process Code Injection PoC Demonstrates arbitrary code execution in a running process via page cache. by @secinfosex What it does: 1. Compiles a test binary: check return 42; in an infinite loop 2. Launches the process 3. Waits for "check = 42" output 4. Replaces...

copy-fail-python

copyfailsu.py Python port of badsectorlabs/copyfail-go CVE-2026-31431. Linux only; requires Python 3.10+ os.splice. How it gets root important This tool does not use the /etc/passwd page-cache trick. It overwrites the page cache of the setuidsu binary with embedded shellcode same payloads as the ...

dirtyclone-CVE-2026-43503

CVE-2026-43503 — DirtyClone Linux local privilege escalation. A cloned skbuff loses the SKBFLSHAREDFRAG flag, so ESP in-place decryption writes into file-backed page-cache memory. The PoC patches /etc/passwd in cache to inject a uid-0 account and gives a root shell. Disk is never modified. Fixed ...

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...

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...

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...

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...

copyfail-rs

copyfail-rs Multi-vector PoC + paired detection for CVE-2026-31431 CopyFail. Includes a novel PAM auth-bypass vector that no other public PoC ships. Detection mode catches what AIDE / Wazuh / OSSEC / Tripwire structurally cannot. Single static binary. 108 KB. nostd musl. Demo noot@host:$...

packet_edit_meme

PACKETEDITMEME - aka CVE-2026-46331 net/sched actpedit partial-COW page-cache corruption culprit 899ee91156e5, present v5.18 .. fixed v7.1-rc7. packeteditmeme.c turns it into unprivileged local root: a userns CAPNETADMIN child overwrites the cached ELF entry of setuid-root /bin/su with...

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

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-2026-46300

🛡️ CVE-2026-46300 - Fragnesia A Clean & Deadly Page-Cache Attack Variant of the "Dirty Frag" family 📌 Overview CVE-2026-46300 Fragnesia is a high-severity logic flaw in the Linux kernel's socket buffer handling skbtrycoalesce within the XFRM/ESP-in-TCP subsystem espintcp ULP. An unprivileged local...

copy-fail-go

copy-fail-go Go port of grenkoca's Python PoC for CVE-2026-31431 copy-fail. This version compiles to a fully static binary with zero runtime dependencies - no Python, no pip, no libc version constraints. Drop it on any Linux target and run it. It also automatically enumerates all SUID...

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...

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...