A safe Linux security checker for CopyFail/CVE-2026-31431.
CopyFail Penguin checks basic Linux system information and possible exposure indicators related to the CopyFail vulnerability.
This project is intended for learning, awareness, and defensive system administration.
- Linux distribution
- Kernel version
- Package manager
- Pending kernel updates
- Reboot-required status
- algif_aead module status
This project does not exploit the vulnerability.
It only checks system information, update status, reboot status, and exposure indicators.
- apt
- dnf
- yum
- zypper
- pacman
- apk
python3 copyfail_checker.py