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FydeOS, developed by Fyde Innovations, is a lightweight operating system that carries a Linux kernel, a browser platform and a container technology driver. It is very similar to Google ChromeOS in use. FydeOS supports the latest web application standards, and is able to run Android and Linux applications (by activating the included Android and Debian subsystems), providing a Google Chromebook-like experience. Users have a choice to use cloud services provided by Google, services powered by Fyde Innovations, or a local account. FydeOS is based on the open-source ChromiumOS and includes the Chromium browser; it is available free of charge for most standard Intel/AMD personal computers.

ATZ Linux (铜豌豆 Linux) is a Chinese Linux distribution based on Debian's "Stable" branch. The project's main goal is to package software that is commonly used in China for easy installation; some examples of such software include QQ instant messaging utility, WeChat social media application, Baidu Netdisk file sharing tool, Sogou input method, NetEase cloud music software, Youdao dictionary, WPS Office, as well as additional Chinese fonts and dictionaries. ATZ Linux remains compatible with Debian and provides an official China-based mirror for software installation.

ShredOS is a small live Linux distribution whose sole purpose is to securely erase the contents of disks. It can boot from a USB device, CD or DVD and it supports both BIOS and UEFI booting. The system boots directly into nwipe, a program that securely erases the contents of block devices; it can wipe a single drive or multiple disks in parallel. After booting the system, the user can select a disk to erase, together with one of the various erasure methods, such as "Fill With Zeros", "Fill With Ones", RCMP TSSIT OPS-II, DoD, Gutmann Wipe, PRNG Stream, Schneier Wipe, BMB21-2019 and others. The nwipe program automatically starts its ncurses-based interface in the first virtual terminal (ALT-F1), while other useful tools, such as hdparm, smartmontools and hexeditor can be run in the second virtual terminal (ALT-F2). ShredOS is available in "Standard" and "Lite" editions, with the latter able to run on computers with as little as 512 MB of RAM.

Security Onion is a specialist, security-oriented Linux distribution based on Oracle Linux. It is a free and open platform for threat hunting, enterprise security monitoring and log management. It includes custom interfaces for alerting, dashboards, hunting, PCAP, detections and case management. It also includes other tools, such as osquery (a tool for exploring and monitoring operating system data with SQL queries), CyberChef (a web application for encryption, encoding, compression and data analysis), Elasticsearch (a data search engine), Logstash (a data collection and processing engine), Kibana (a data visualization plugin for Elasticsearch), Suricata (an intrusion detection and prevention system) and Zeek (a software network analysis framework).

Michael Catanzaro has disclosed a command-injection vulnerability affecting a number of GTK-based PDF readers; exploits included:

They contain a script for building malicious polyglot PDFs that are simultaneously both valid PDF files and also valid ELF binaries. When the user opens the PDF in the PDF viewer and clicks on a malicious link embedded in the PDF, the PDF abuses the command injection vulnerability to load itself as a GTK module using the `--gtk-module` command line flag. It can then execute arbitrary code via its library constructor. That flag was removed in GTK 4, which is why the vulnerability is much less serious for Papers than it is for Evince, Atril, and Xreader.

Arcris is a live Linux distribution based on Arch Linux. It comes with an intuitive and beginner-friendly graphical installer that can be used to build a complete Arch Linux system. AcrisGUI, as the installation program is called, is built with the GTK toolkit and libadwaita interface library; it is designed primarily for Spanish-speaking users.

Flora Linux-libre is a Linux distribution that uses the Linux-libre kernel, a modified version of the Linux kernel that contains no binary blobs, obfuscated code, or code released under proprietary licenses. It also excludes any non-free firmware. The project rebuilds Debian's "Stable" and some other Debian derivatives, such as MX Linux, and creates a "libre" flavour of those distributions with either MATE or Xfce desktop. Flora Linux-libre also comes with snapshot tools and installers that enable easy remastering of the distribution, as well as uim (short for universal input method), a multilingual input method framework.

Proxmox is a commercial company offering specialised products based on Debian GNU/Linux, notably Proxmox Virtual Environment and Proxmox Mail Gateway. Proxmox Virtual Environment is an open-source virtualisation platform for running virtual appliances and virtual machines. Proxmox Mail Gateway is a mail gateway with anti-spam and anti-virus features. The products are offered as free downloads with paid-for support and subscription options.

José Marchesi and the GCC-BPF developers opened the BPF track at the 2026 Linux Storage, Filesystem, Memory-management, and BPF Summit with a 90-minute summary of what has changed for GCC's BPF support in the past year. This kind of session has become something of a tradition. There were similar updates in 2025 and 2024. This time around, GCC seems to be closing in on feature parity with the LLVM toolchain — as the slides detail.

The OpenBSD 7.9 release is out, right on schedule. There is the usual long list of new features, including improved architecture support, CPU scheduling on heterogeneous systems, the ability to hibernate a suspended system after a configurable delay, socket splicing, a __pledge_open() system call giving special access to the C library, and much more. See the announcement and the full changelog for details.

Gregory Price started his session in the memory-management track of the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit by saying that, in current kernels, if a NUMA node has memory, the assumption is that anybody can make use of it. He is trying to implement the opposite policy — to make some memory off-limits for all processes except those designed specifically to use it. The session was used to present his goals and to discuss how they might be implemented.

Security updates have been issued by AlmaLinux (kernel, kernel-rt, and libsndfile), Debian (bind9, evince, firefox-esr, openjpeg2, pdns, and rsync), Fedora (erlang-cowlib, evince, expat, firefox, kernel, mingw-expat, mysql8.0, mysql8.4, nss, opencryptoki, pgadmin4, proftpd, python-django5, python-django6, python-dotenv, rsync, rust-nu, rustup, and strongswan), Oracle (nginx, nginx:1.24, ruby, ruby:3.3, and squid), Slackware (bind and rsync), SUSE (buildah, distribution, distribution-registry, docker, firefox-esr, helm, libpainter0, libsdb2_4_2, postgresql-jdbc, runc, and vim), and Ubuntu (gnutls28, gst-plugins-good1.0, jq, linux-nvidia, linux-nvidia-lowlatency, openvpn, rsync, and unbound).

BSD Router Project (BSDRP) is an embedded free and open-source router distribution based on FreeBSD with Quagga (a software routing suite) and BIRD (an open-source implementation for routing Internet Protocol packets). Unlike other embedded networking tools, BSDRP focuses exclusively on routing packets and not on advanced firewall techniques. Additional functionality can be added to the operating system via FreeBSD's ports collection.

Slimbook OS is an Ubuntu-based Linux distribution customised for the Slimbook line of Linux computers assembled in Spain. It offers a choice of GNOME or KDE Plasma desktops on a single ISO image which also includes some custom extensions and utilities. The distribution provides its own repositories for some software, prioritising DEB and Flatpak packages over Ubuntu's snap options. Some of the other interesting features of Slimbook OS include touchpad gestures (enabled by default), Slimbook service notifications, window tiling, the Terminator terminal emulator, a Ulauncher application for fast searching, and a day/night mode switcher.

Version:next-20260521 (linux-next) Released:2026-05-21

Ditana GNU/Linux is an Arch-based Linux distribution that bridges the gap between user-friendly systems and highly customizable environments. It aims to empower Linux enthusiasts with unprecedented control over their computing experience while maintaining a strong focus on security and performance. The project provides a flexible, text-based system installer with extensive customisation options, an Xfce desktop environment with pre-installed enhancements, a modular structure, pre-configured security features and kernel settings, and intelligent hardware and system optimisations for peak performance.

MidnightBSD is a FreeBSD-derived operating system. A critical goal of the project is to create an easy-to-use desktop environment with graphical ports management, and system configuration using GNUstep. The vast majority of the operating system will maintain a BSD license. MidnightBSD was forked from FreeBSD 6.1 beta.

PureOS is a GNU/Linux distribution based on Debian. It is a desktop distribution that can be used as live media (CD or USB) or as full-featured operating systems installed on a hard disk. PureOS uses free and open source software exclusively and is endorsed by the Free Software Foundation. It ships with some privacy features enabled by default such as using DuckDuckGo as the search engine and the HTTPS Everywhere browser extension is enabled.

Nitrux is a desktop Linux distribution built from Debian, but with an immutable base system, the OpenRC init system, and without any traditional Debian package management tools. It uses the Calamares system installer and includes the Hyprland window manager, Hypr utilities, the greetd+QtGreet login manager, and the Waybar Wayland bar. Nitrux emphasizes the use of AppBox to manage end-user software and it also supports AppImage and Flatpak package formats.

Inside this week's LWN.net Weekly Edition:

• Front: OpenSUSE site age restrictions; Lots of LSFMM+BPF coverage; The tenth OpenPGP email summit.
• Briefs: Firefox 151.0; pgBackRest funding; RIP Peter G. Neumann; Quotes; ...
• Announcements: Newsletters, conferences, security updates, patches, and more.