Linux Journal

Linux kernel developers are renewing efforts to retire the x32 application binary interface (ABI), a little-used compatibility feature that attempted to combine the advantages of 64-bit processors with the smaller memory footprint of 32-bit applications. A revised patch series submitted on October 8, 2026, proposes the first steps toward disabling the interface, potentially ending support for an architecture experiment introduced more than 14 years ago.

Google is exploring a new approach to Linux kernel security that could significantly change how device drivers interact with the operating system. The experimental project, known as Kage, uses compiler-based sandboxing to isolate drivers inside the kernel, potentially limiting the damage caused by memory corruption, programming errors, and exploitable vulnerabilities without requiring drivers to run as separate user-space processes.

Linux users have long had a pragmatic relationship with text-to-speech. The classic open-source engines have been available for years, wired into accessibility tools and the occasional script, dependable but unmistakably robotic. They do the job where the job is simply to convert text to some kind of speech, but the mechanical output has kept them out of anything where the voice actually matters.

The Arch Linux project has released Archinstall 4.5, the latest version of its guided text-based installer, bringing expanded AArch64 support, new real-time Linux kernel options, additional translations, security improvements, and numerous fixes for installation workflows.

The systemd project has officially released systemd 262, delivering another substantial update to the system and service manager used by most major Linux distributions. The final release was tagged on September 22, 2026, following three release candidates earlier in the month. Systemd 262 introduces improvements across service management, containers, virtualization, encrypted storage, TPM security, networking, journal recovery, system updates, and unattended installations.

Ubuntu administrators running containerized workloads have a new Linux kernel security problem to watch closely. Public exploit code is now available for CVE-2026-80521, a Linux kernel use-after-free vulnerability that can allow an unprivileged process inside a container to escape and obtain root privileges on the underlying host. Security firm DepthFirst published its research and exploit on September 22, 2026, demonstrating the attack against Ubuntu 26.04 LTS.

The Fedora Project has officially released Fedora Linux 45 Beta, giving users an early look at the technologies expected to form the foundation of the final Fedora 45 release. The beta became available on September 15, 2026, after Fedora's Quality team approved Release Candidate 1.3 for publication.

The Thunderbird team has officially released Thunderbird 156, bringing another round of new features, security improvements, authentication enhancements, and reliability fixes to the popular open-source email client. Released on September 15, 2026, the update is available for Linux alongside Windows and macOS. Thunderbird 156 is not a dramatic redesign of the desktop mail client.

The KDE Project has officially released KDE Plasma 6.7.5, delivering another round of bug fixes and stability improvements for the Plasma 6.7 desktop series. Released on September 8, 2026, the update contains roughly a month of fixes and updated translations contributed since Plasma 6.7.4 arrived in early August. Unlike a major Plasma release, version 6.7.5 doesn't introduce a large collection of new desktop features.

One of Linux's oldest surviving distributions is moving closer to its next major release. Slackware 16 Alpha 1 became available on September 5, 2026, marking the first formal alpha milestone on the road toward Slackware Linux 16. The release follows a major rebuild of Slackware-current using a substantially newer GNU toolchain and brings together several upgrades that have accumulated since Slackware 15.0 arrived more than four years ago.