Security
News
2026-05-24
Critical Linux Kernel Cryptographic Template Bug (CVE-2026-31431) Lets Local Users Escalate to Root via Page‑Cache Write
A newly disclosed logic flaw in the kernel’s cryptographic copy‑on‑write mechanism allows any local user to overwrite arbitrary readable files, opening a straightforward path to root privilege escalation.
cve
linux-kernel
privilege-escalation
security
vulnerability
Tutorial
2026-05-15
Linux file permissions explained — what I wish I knew earlier
A beginner-friendly guide to Linux file permissions covering chmod, chown, special bits, and the dangerous 777 mistake that exposes servers to attack.
linux
file-permissions
chmod
sysadmin
security
Tutorial
2026-05-14
What does a Linux systems engineer actually do day to day
A practical look at the daily responsibilities of Linux systems engineers—from patching vulnerabilities and vulnerability assessments to server troubleshooting, application onboarding, and security hardening.
linux
systems-engineering
sysadmin
devops
career