The new Modules tab in Kernel Security Checker: paste your lsmod output and get a list of modules that are unnecessary attack surface or tied to a CVE, plus a ready-to-use blacklist for /etc/modprobe.d/.
Posts for: #Tutorial
Kernel Security Checker: Check If Your Kernel Version Has Known Exploits
The new Vulnerabilities section in Kernel Security Checker: enter your kernel version, get a list of known public exploits matched to your kernel.
Check If Your Kernel Is Vulnerable to CopyFail (CVE-2026-31431)
How to check your kernel’s vulnerability to CopyFail (CVE-2026-31431) using Kernel Checker on vmlinuz.pl. One minute and you know.
Kernel Hardening Part 3 — Check Your Boot Parameters
Kernel Security Checker now checks kernel boot parameters. Make sure your cmdline isn’t disabling security features.
Kernel Hardening Part 2 — Check Your Sysctl Settings
Kernel Security Checker now supports sysctl. Check your kernel runtime settings without recompiling.
Path Traversal — How Attackers Read Files from Your Server
What is path traversal, how it works, bypass techniques attackers use, and how to defend against it.
REST API — HTTP Method Override and Its Consequences
How to override HTTP methods in flight, why it works, and what the security consequences are for REST APIs.
Kernel Hardening — Check Your Kernel Security in 30 Seconds
How to quickly check if your kernel configuration is secure. Upload your .config file and see what needs fixing.
dmesg Command in Linux — How to Read Kernel Logs
How to use the dmesg command to diagnose hardware, driver, and boot issues in Linux. Practical examples of filtering and analyzing kernel log messages.
Strace in Linux — How to Trace System Calls
How to use strace to trace system calls of processes in Linux. Attaching to running processes, filtering, and practical debugging examples.