Cybersecurity CVE-2026-31431 "Copy Fail": How a 9-Year-Old Linux Kernel Bug Gives Any Local User Root in 732 Bytes CVE-2026-31431 chains AF_ALG, splice(), and authencesn's ESN scratch write into a deterministic 4-byte page cache write that gives an unprivileged local user root. Full technical breakdown, exploit mechanics, detection, mitigation, and patch status per distro.
Monthly Roundup Monthly Roundup — April 2026 The six biggest articles from CoderOasis in April 2026 — local LLMs, self-hosted stacks, Claude Mythos breaking Firefox, the r/programming AI ban, Stable Diffusion, and the sandbox escape that changed everything.
Self Hosting How to Self-Host Your Own Email Server With Mailcow in 2026 — Complete Setup Guide How to Self-Host Your Own Email Server With Mailcow in 2026 — Complete Setup Guide Meta Description: Stop letting Google and Microsoft read your email. This guide sets up a complete private email server with Mailcow on a NetCup VPS — DNS, SPF, DKIM, DMARC, TLS, webmail, and mobile clients.
Self Hosting The Complete Self-Hosted Productivity Stack: Nextcloud, Vaultwarden, Immich, Jellyfin, and Paperless in 2026 Replace Google Drive, Google Photos, 1Password, Plex, and your document scanner with a self-hosted stack that runs on your hardware. Complete Docker Compose setup with Traefik, Nextcloud, Vaultwarden, Immich, Jellyfin, and Paperless-ngx.
Linux Linux 7.1 MMC Changes Finally Land After Linus Called the 7.0 Submission "Complete Garbage" Back in February 2026, Linus Torvalds rejected the entire MMC subsystem pull request for Linux 7.0, calling it "complete garbage" and "untested crap" because it didn't build properly and bypassed linux-next. Linux 7.1 gets it right.
Linux Linux 7.0 RC6 Is Busier Than It Should Be, and Torvalds Isn't Happy About It Linux 7.0 RC6 landed with more fixes than Torvalds wants to see this late in the cycle, and RC5's calm turned out to be a mirage. He's not panicking yet — but he's also not making promises about the release date, and he suspects better AI coding tools might be partly responsible for the noise.
Cybersecurity What is Privilege Escalation? How Attackers Go From Foothold to Full Control An attacker starts with a low-privileged shell or user account and escalates to root or Administrator using misconfigurations, SUID binaries, kernel exploits, and Active Directory attacks. Here's every technique, the tools professionals use, and how to harden against it.
Cloud Computing What is Infrastructure as a Service? The Layer That Makes Everything Else Possible Infrastructure as a Service gives you virtualized servers, storage, and networking on demand without owning any hardware. You rent compute and own everything that runs on it. Here is what IaaS actually is, what it demands from you.
Linux Understanding Linux's True and False Commands True and False are the most common concepts in all forms of computing. They’re so highly critical to Boolean logic, but did you know that true and false are also even commands on Linux? There is a simple explanation. This is that the true command generates an exit code
Linux Package Source (pkgsrc): An Introduction Package source is an interesting project that is developed primarily by the NetBSD team. It is based on a ports tree system. If you are a Linux user, then know that Gentoo is based on the FreeBSD ports tree system. For the rest of you who are not Linux users
Linux Introduction to the Awesome World of BSD Distros Almost everyone in the tech sector is familiar with Linux in some capacity. Their use of it may be on the server as a sysadmin, Android phone user, desktop experience, deploying a micro-service via the cloud or in the embedded space. In some way, shape, or form, everyone in the
