CopyFail-CVE-2026-31431

CopyFail: CVE-2026-31431 Python implementation of copy.fail. Overwrites the page cache of a setuid-root binary via AFALG + splice to get root. No race, no offsets works on any Linux distro since 2017. Requirements Python 3.6+ 3.12+ uses os.splice natively; older versions fall back to ctypes Linux...

copyfail-exploit

Copy Fail · CVE-2026-31431 Linux 커널 4.11부터 패치된 6.18 릴리스 이전 버전까지의 로컬 권한 상승 취약점입니다. 이 버그는 커널의 AFALG 소켓 인터페이스, 특히 authencesn이 제자리in‑place AEAD 복호화 중 scatter-gather 목록을 처리하는 방식에 존재합니다. 그 결과, 권한이 없는 사용자가 읽기 가능한 모든 파일의 페이지 캐시 에 4바이트씩 덮어쓸 수 있습니다. /usr/bin/su와 같은 setuid 바이너리를 셸코드로 덮어쓰고 실행하면 root 권한을 얻을 수...

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...

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. root@kitploit: $...

CVE-2026-31431-CopyFail-Lab

CVE-2026-31431 "Copy Fail" — Linux Kernel LPE Lab Overview This repository documents a complete lab investigation of CVE-2026-31431 Copy Fail , a high-severity local privilege escalation LPE vulnerability in the Linux kernel's algifaead cryptographic module, disclosed on April 29, 2026. CVSS Scor...

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...

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...

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-exploit

CVE-2026-31431 WARNING These Linux LPE exploit implementations are runtime-destructive. They overwrite the live page-cache view of privileged targets such as: su PAM configuration files any file passed into patch mode This is usually not a normal persistent on-disk edit, but it does change runtim...

CVE-2026-53365

CVE-2026-53365 — VsockDrop:iouring + AFVSOCK Zero-Copy Reference Count Underflow, Page-Cache Overwrite Privilege Escalation HackSpeak distribution mirror. This repository is a distribution mirror of MaherAzzouzi/vsockdrop , with code identical to upstream; upstream does not include a LICENSE, so...

CVE-2026-31431-Metasploit-exploit

CVE-2026-31431 - Linux Kernel AFALG "Copy Fail" Local Privilege Escalation An automated Metasploit Post-Exploitation module that leverages CVE-2026-31431 popularly known as "Copy Fail" to perform Local Privilege Escalation LPE on vulnerable Linux kernels versions 4.14 through 6.19.12. Description...

Dirty-Frag-CVE-2026-43284

Dirty Frag CVE-2026-43284 y CVE-2026-43500 Laboratorio de reproducción y detección de exploits para una cadena de escalada de privilegios local en el kernel de Linux. Estado: VERIFICADO. Completé la reproducción, la verificación sin archivos y la detección a nivel de llamadas al sistema en el...

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...

CVE-2026-31431-CopyFail-Linux-PrivEsc

CVE-2026-31431 CopyFail Escalada Local de Privilegios en Linux Una demostración y explicación de CVE-2026-31431, la vulnerabilidad de escalada local de privilegios por Copy Fail en el kernel de Linux. La vulnerabilidad permite que, en archivos abiertos con permiso de lectura, se sobrescriban dato...

CVE-2026-43494-PinTheft-PoC

SLEY — PinTheft PoC CVE-2026-43494 Proof of concept — uid=1000raken → uid=0root after ./sley on WSL2 6.6.87.2-microsoft-standard-WSL2 Single-file proof-of-concept for CVE-2026-43494 PinTheft: a Linux kernel local privilege escalation that chains an RDS zerocopy reference-count bug with iouring...

kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel

A flaw was found in the Linux kernel's XFRM ESP-in-TCP subsystem. Unsafe in-place cryptographic processing allows a low-privileged local attacker to write arbitrary bytes into the page cache of read-only files, including sensitive system files. An attacker can exploit this to overwrite privileged...

FreeBSD Security Advisory - FreeBSD-SA-26:26.ktls

FreeBSD Security Advisory - The KTLS receive path decrypted each record in place, assuming that the mbufs holding received data were anonymous and safe to modify. This assumption does not hold for data placed on a socket by sendfile2, which can reference file-backed memory directly through...

Important: kernel-livepatch-6.1.170-210.320

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/rds: reset opnents when zerocopy page pin fails CVE-2026-43494 Affected Packages: kernel-livepatch-6.1.170-210.320 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel-livepatch-6.12.83-113.160

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/rds: reset opnents when zerocopy page pin fails CVE-2026-43494 Affected Packages: kernel-livepatch-6.12.83-113.160 Issue Correction: Please ensure you have live patching enabled. Run dnf update...

Important: kernel-livepatch-6.12.83-111.159

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net/rds: reset opnents when zerocopy page pin fails CVE-2026-43494 Affected Packages: kernel-livepatch-6.12.83-111.159 Issue Correction: Please ensure you have live patching enabled. Run dnf update...