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...

check-copyfail-cve-2026-31431

check-copyfail check-copyfail.sh is a read-only Bash script that assesses host exposure to CVE-2026-31431 "Copy Fail". Author: Silent4Labs It inspects the local system for: kernel version and known upstream patch state affected distribution baselines algifaead module status active AFALG socket...

CVE-2026-31431-cleaned

copyFail.py — CVE Exploit Analysis Report Summary copyFail.py is a proof-of-concept PoC exploit that demonstrates a local privilege escalation vulnerability in the Linux kernel. By abusing the splice system call in combination with crafted socket options, the exploit gains the ability to corrupt...

CVE-2026-31431

CVE-2026-31431 — Local Privilege Escalation via AFALG 2026-04-29 — I am publishing this exploit one day after sharing it on theMyDigitalLife forum. It does not require Python; it is written in C and compiled to the smallest possible size using: musl-gcc -static -Os -o exploit exploit.c -s Critica...

CVE-2021-4034

CVE-2021- A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling...

Linux-Kernel-Copy-Fail-CVE-2026-31431-

Copy Fail CVE-2026-31431 Vulnerability Analysis and Response Practice This project analyzes the operational principle of the Linux Kernel Copy Fail CVE-2026-31431 vulnerability and compares the pre-patch and post-patch state using the non-destructive checker from the public PoC repository. It doe...

cve-2010-3847

CVE-2010-3847 script Meant to automate the exploit discussed in http://marc.info/?l=full-disclosure&m=128776663124692&w=2. Tested on CentOS 5 x86. The DSO it outputs is compiled from the following code: include include include void attributeconstructor init setuid0; system"/bin/bash"; Usage...

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...

CVE-2021-4034-POC

CREDITS VULNERABILITY AUTHOR: https://blog.qualys.com/vulnerabilities-threat-research/2022/01/25/pwnkit-local-privilege-escalation-vulnerability-discovered-in-polkits-pkexec-cve-2021-4034 Reference https://github.com/arthepsy/CVE-2021-4034/blob/main/cve-2021-4034-poc.c...

cve-2021-4034

CVE-2021-4034 exploit but in rust, cause why not ? Based on https://github.com/arthepsy/CVE-2021-4034/blob/main/cve-2021-4034-poc.c $ ./download-and-unpack-vulnerable-pkexec.sh optionally enable setuid/setgid for testing $ cargo run --bin prep && cd playground && cargo run --bin pwn Finished dev...

CVE-2026-31431-CopyFail-static-ELF--POC

CVE-2026-31431: Copy Fail - 587-byte static ELF I did not find this bug. Credit goes to Xint Code / Theori. This repo is my take on making the exploit as small as possible - a hand-rolled x8664 ELF that does the full LPE in 587 bytes. No libc, no linker, no runtime. Just NASM and stubbornness. In...

kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions

A flaw was found in the Linux kernel's Server Message Block SMB client. When a file with the setuid or setgid bit is written to on certain Common Internet File System CIFS mounts specifically those using 'cifsacl', 'modefromsid' options, or SMB3.1.1 POSIX extensions, the kernel fails to properly...

kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions

A flaw was found in the Linux kernel's Server Message Block SMB client. When a file with the setuid or setgid bit is written to on certain Common Internet File System CIFS mounts specifically those using 'cifsacl', 'modefromsid' options, or SMB3.1.1 POSIX extensions, the kernel fails to properly...

ncurses: Fix of 2 CVEs

CVE-2021-39537: fix heap buffer overflow in nccaptoinfo with a crafted termcap entry - CVE-2023-29491: ignore terminfo/termcap environment variables in setuid/setgid programs --disable-root-environ...

kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions

A flaw was found in the Linux kernel's Server Message Block SMB client. When a file with the setuid or setgid bit is written to on certain Common Internet File System CIFS mounts specifically those using 'cifsacl', 'modefromsid' options, or SMB3.1.1 POSIX extensions, the kernel fails to properly...

kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions

A flaw was found in the Linux kernel's Server Message Block SMB client. When a file with the setuid or setgid bit is written to on certain Common Internet File System CIFS mounts specifically those using 'cifsacl', 'modefromsid' options, or SMB3.1.1 POSIX extensions, the kernel fails to properly...

CLSA-2026-1792806631 ncurses: Fix of 2 CVEs

CVE-2021-39537: fix heap buffer overflow in nccaptoinfo with a crafted termcap entry - CVE-2023-29491: ignore terminfo/termcap environment variables in setuid/setgid programs --disable-root-environ...

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-2026-114105 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...