Copy_Grail

copygrail | copy-fail-CVE-2026-31431 copygrail is a compact, single-file C++ implementation of the CVE-2026-31431 "Copy Fail" local privilege escalation vulnerability. It showcases a clean AFALG + splice page cache corruption technique that can be used to overwrite a setuid binary and escalate...

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 ...

CVE-2021-4034

Python3 code to exploit CVE-2021-4034 PWNKIT. This was an exercise in "can I make this work in Python?", and not meant as a robust exploit. It Works For Me, there are problaby bugs. The default payload starts a shell as root, generated from msfvenom: msfvenom -p linux/x64/exec -f elf-so...

local-exploits

Local Exploits Various local exploits CVE-2020-8793 opensmptd-makemap-lpe - Fedora 31 OpenSMTPD makemap local root exploit. Code mostly taken from Qualys advisory 2020-02-24 for CVE-2020-8793. opensmtpd: Reading of arbitrary file by unprivileged attacker can result in information disclosure or...

CVE-2023-0386-libs

Install compilation environment sudo apt install -y gcc libfuse-dev pkg-config Compile exploit gcc -Wall CVE-2023-0386.c pkg-config fuse --cflags --libs -DFILEOFFSETBITS=64 -o CVE-2023-0386-exp -static -lfuse Generate shellcode msfvenom -p linux/x86/exec CMD=/bin/sh PrependSetuid=True -f elf -o...

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-PoC

CVE-2026-31431 PoC Local Privilege Escalation in the Linux Kernel via algifaead Page Cache Write "Copy Fail" Author: Van Glenndon Enad Original Discovery: Theori / Xint Code Research Team Taeyang Lee Published: April 29, 2026 Severity: High CVSS v3.1 Score: 7.8 CVSS v3.1 Vector:...

CVE-2021-3156

CVE-2021-3156 PoC Introduction This is an exploit for the CVE-2021-3156 sudo vulnerability dubbed Baron Samedit by Qualys. Usage build: $ make list targets: $ ./sudo-hax-me-a-sandwich run: $ ./sudo-hax-me-a-sandwich manual mode: $ ./sudo-hax-me-a-sandwich Bruteforce target finding experimental Ma...

CVE-2026-31431

🚨 CVE-2026-31431: Copy Fail A critical 9-year-old flaw in the Linux kernel that allows obtaining root access in seconds 📋 Executive Summary Attribute| Details ---|--- CVE| CVE-2026-31431 Nickname| Copy Fail Type| Local Privilege Escalation LPE CVSS| 7.8 High Discovered by| Theori Xint Code...

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...

Mitigaciones

CVE-2026-31431 "Copy Fail" Mitigations Collection of automation scripts and playbooks for the detection and mitigation of vulnerability CVE-2026-31431 local privilege escalation via page cache corruption in setuid binaries on Linux systems. Repository Contents cve-2026-31431-mitigator.sh :...

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-2021-4034

Study Project CVE-2021-4034 PwnKit This repository contains the materials, code examples, and documentation for the study project within the elective module Applied IT Security about the security vulnerability CVE-2021-4034 , also known as PwnKit. Summary This study project within the elective...

CVE-2026-31431-Checker-Mitigator

CVE-2026-31431 Checker & Mitigator A simple, safe vulnerability scanner and mitigation tool for CVE-2026-31431 aka "Copy Fail", a local privilege escalation vulnerability in the Linux kernel's AFALG cryptographic interface. Note - It is fully vibe coded Script About the Vulnerability CVE :...

ctf

CTF Related stuff Table of Contents The challs are linked in the table below. Description| Event/Game| Solution ---|---|--- Smash The Stack| ---| --- Blackbox| Level 1| An exe with a "login" functionality with the password in plain text in the memory. Blackbox| Level 2| An exe with setuid for...

CVE-2026-114105

Adm-zip before 0.6.1 contains an incorrect permission assignment vulnerability that allows attackers to set setuid, setgid, or sticky bits on extracted files when keepOriginalPermission is enabled. Attackers can craft zip external file attributes that pass unmasked into chmod, letting...

CVE-2026-31431

CVE-2026-31431 — "Copy Fail" Local Privilege Escalation in the Linux Kernel crypto algifaead subsystem. Overview CVE-2026-31431, dubbed "Copy Fail", is a logic bug in the Linux kernel's authencesn cryptographic template algifaead. It allows an unprivileged local user to perform a controlled 4-byt...

CVE-2025-57489

CVE-2025-57489 Description From the developer's blog: When the lock in SuperDuper is unlocked to allow execution to occur without having to enter an administrator password, a 3rd party program could make use of our authorization to run something other than a backup with administrator privileges...

CVE-2026-114105 Adm-zip before 0.6.1 Privilege Escalation via keepOriginalPermission Setuid Bits

Adm-zip before 0.6.1 contains an incorrect permission assignment vulnerability that allows attackers to set setuid, setgid, or sticky bits on extracted files when keepOriginalPermission is enabled. Attackers can craft zip external file attributes that pass unmasked into chmod, letting...

CVE-2026-114105 Adm-zip before 0.6.1 Privilege Escalation via keepOriginalPermission Setuid Bits

Adm-zip before 0.6.1 contains an incorrect permission assignment vulnerability that allows attackers to set setuid, setgid, or sticky bits on extracted files when keepOriginalPermission is enabled. Attackers can craft zip external file attributes that pass unmasked into chmod, letting...