Linux Weekly News

Linus has released 7.3-rc1 and closed the merge window for this release. "Nothing really stands out - except for the fact that it's big. It's not the biggest rc1 we've ever had, but it's certainly up there, at least in number of commits." He pulled 15,267 commits during this merge window, making it the second busiest ever; only 6.7 has exceeded it.

The results of the Debian general-resolution vote on the use of large language models have been posted; the winner is choice 5: Responsible Use of Generative AI.

Debian neither endorses nor prohibits the use of generative AI tools in the development, maintenance, or documentation of software, packaging, documentation, and other media published within the Debian Project. We recognize that such tools can substantially improve the productivity of contributors when used responsibly, allowing volunteers to spend more of their limited time on work that requires technical expertise, judgment, review, and collaboration.

The Debian Project nevertheless expects that all contributions submitted to Debian, regardless of how and with which tools they were produced, satisfy the same standards of quality, correctness, maintainability, and legal compliance. The use of a generative AI tool does not diminish the contributor's responsibility for the work they submit. Contributors are expected to understand, review, test, and, where appropriate, modify AI-assisted output before incorporating it into Debian.

Konstantin Ryabitsev has written a blog post with hard numbers about the impact of AI crawlers on the Linux kernel repositories at git.kernel.org:

Today, git.kernel.org receives about 6M daily requests demanding to see random commits. Of these, 66% are still immediately batted away with the Anubis challenge, but 33% are now solving the math and getting through to the main site — because apparently what we have to offer is worth spending a ton of cycles to calculate the Anubis challenge.

It's impossible to tell with certainty which of these are bots and which are real humans — but chances are, if it's asking for an old commit in a random old fork, it's probably not a real developer trying to do their work.

With a bunch of generous assumptions, legitimate requests are only about 2% of git.kernel.org traffic — everything else are scrapers.

Méven Car has written a pair of interesting blog posts (part 1, part 2). The first post is largely about some of the recent new features and performance work that have gone into the Dolphin file manager 26.08 release, as well as the KIO framework. The second looks at the performance improvements and benchmarks for previous, current, and upcoming releases.

Copying many small files is more than twice as fast as it was in April. The gain falls off as files get larger, which is what you would expect: the fix is to the per-file overhead, and once each file carries a megabyte of actual I/O the overhead stops being what you are waiting for.

There is still a gap with cp, discussed at length in the July post. KIO is doing more than cp does, but not five times more, and the batching work that closes most of the rest of that gap is still in progress.

The null block driver (null_blk) is a small driver that is mostly useful for benchmarking block-layer implementations. It accepts all requests and marks them complete as quickly as possible, doing as little work as possible. In June 2026, Andreas Hindborg shared a patch set implementing the same functionality in Rust, in order to show that a simple block driver is now possible to write using the kernel's Rust APIs and to enable comparisons between the C and Rust implementations. A minimal version of the "rnull" driver is already present in the mainline kernel, but Hindborg's patch set brings it up to feature parity with the C version.

Greg Kroah-Hartman has announced the release of the 7.2.2, 7.1.12, 6.18.48, 6.12.107, 6.6.155, 6.1.186, 5.15.219, and 5.10.268 stable kernels.

Each of these contains a single fix for a vulnerability (CVE-2026-80590) that allows marking IPv4 or IPv6 fragments as GSO, which can allow an unprivileged user to cause a kernel panic. This vulnerability has been present since Linux 2.6.27. Users are advised to upgrade.

Security updates have been issued by AlmaLinux (assertj-core, golang, httpd, kernel, and libxml2), Debian (chromium and suricata-update), Fedora (rust-h2), Mageia (avahi and python-django), Oracle (kernel and mingw-openssl), SUSE (c-ares-devel, dracut, gh, gstreamer-plugins-bad, java-11-openjdk, liboqs, librest0_7, openssl, openssl-3, pcp, python313-mistune, python36-pip, qt6-svg, rmt-server, rsync, suseconnect-ng, texlive, tor, wicked, and xmlrpc-c), and Ubuntu (linux-azure, linux-azure-4.15, linux-azure-fips, linux-azure-6.8, linux-ibm, linux-ibm-6.8, linux-oracle-6.8, linux-raspi, linux-raspi-realtime, linux-azure-fde-5.15, linux-fips, linux-gke, linux-gcp-fips, opencryptoki, and pam).

Virtualization can increase CPU utilization by allowing a large number of virtual CPUs to share a smaller number of physical CPUs. The amount of CPU time that is actually available does not change, though, so heavy activity on too many virtual CPUs can lead to contention and significant performance loss. The steal governor patch series from Shrikanth Hegde is an attempt to address that problem with a mechanism that allows virtual machines to voluntarily reduce the number of virtual CPUs they use when contention is high.

Greg Kroah-Hartman has announced the release of the 7.2.1, 7.1.11, 6.18.47, 6.12.106, 6.6.154, 6.1.185, 5.15.218, and 5.10.267 stable kernels. Each of these has important updates throughout the tree; users are advised to upgrade.

Security updates have been issued by AlmaLinux (assertj-core, attr, firefox, go-toolset:rhel8, golang, grafana, gstreamer1-plugins-good, httpd, kernel, mingw-openssl, mod_http2, nginx, nginx:1.24, pam, polkit, and sqlite), Debian (bubblewrap, cockpit, emacs, gimp, libdbi-perl, openjdk-11, openjdk-17, wireshark, and xrdp), Fedora (bluez, curl, emacs, golang, knot, libopenmpt, libsoup3, openbao, openssh, rsync, rust-anstyle-hyperlink, rust-anstyle-progress, rust-cargo, rust-cargo-c, rust-cargo-credential-libsecret, rust-cargo-util, rust-cargo-util-schemas, rust-cargo-util-terminal, rust-crates-io, and rust-rustfix), Gentoo (Chromium, Google Chrome, Microsoft Edge, Opera, Chromium, Google Chrome, Microsoft Edge, Opera, Vivaldi, Chromium, Google Chrome, Microsoft Edge. Opera, and OpenRGB), Oracle (abrt, assertj-core, attr, gstreamer1-plugins-base, gstreamer1-plugins-good, httpd, nginx:1.24, nginx:1.26, nodejs24, and polkit), SUSE (apache2-mod_auth_openidc, buildah, curl, docker, dracut, evince, go1.25-openssl, go1.26-openssl, go1.27, gstreamer-plugins-bad, kernel, kubernetes, kubernetes-old, libarchive, LibVNCServer, libwireshark19, pcp, python310-pip, qemu, rootlesskit, rsync, snpguest, and util-linux), and Ubuntu (bind9, libheif, and openssl, openssl1.0).

Inside this week's LWN.net Weekly Edition:

• Front: AGPL violations; OpenMDW license; quantum computing and encryption; 7.3 merge window; Remind; Quickshell.
• Briefs: arrayref; RIP Steve French; Armbian 26.8; Vanilla OS 3; Emacs 31.1; KDE Gear 26.08; LibreOffice 26.8; RPM 6.1.0; Quotes; ...
• Announcements: Newsletters, conferences, security updates, patches, and more.

At FOSSY 2026, several people from the Software Freedom Conservancy (SFC), which organizes the conference, gave a presentation about an ongoing violation of the Affero General Public License version 3 (AGPLv3). Bradley Kühn, Karen Sandler, and Denver Gingerich spoke about different aspects of the violation, which is in regard to 3D-printer software from Bambu Lab, and what is being done to try to provide users with alternatives. One aspect that is particularly interesting is that the circumvention that the company is employing is precisely what the AGPL was written to prevent.

Version 26.8 of the Armbian distribution for Arm hardware has been released.

Most releases are a long list of small improvements. This one had three larger pieces landing at roughly the same time, and all three touch parts of Armbian that people use directly rather than parts they only read about in changelogs.

The installer was rewritten. Armbian Imager reached 2.0. And our CI moved out of the repository it had outgrown into one built for the job. None of these were planned to coincide; they simply reached the point where postponing them again would have cost more than doing them.

The installer rewrite is the one I expect people to notice first. It now ships as an armbian-config module, which means it is unit-tested, the same way the rest of armbian-config is tested, rather than living as a script that everyone was slightly afraid to touch. It can target SPI and MTD, treats eMMC and NVMe as separate flows instead of pretending they are the same thing, can flash a bootloader on its own, and — this one is overdue — reports when a bootloader write fails instead of printing "Done." and leaving you to find out at the next boot.

See the release notes for a full list of changes.

Security updates have been issued by AlmaLinux (firefox, gstreamer1-plugins-base, kernel, kernel-rt, and sqlite), Debian (freecad, kernel, libvncserver, and openssl), Fedora (apr-util, chromium, nnn, perl-DBI, python-tablib, python3.10, python3.11, python3.12, and sympa), Gentoo (DTrace, GNU screen, UnrealIRCd, and Vinyl Cache), Oracle (389-ds-base, attr, firefox, gegl04, grafana, gstreamer1-plugins-base, gstreamer1-plugins-good, httpd, mod_http2, nginx, pam, python-pyasn1, python-urwid, python3.12, python3.14, sqlite, and xorg-x11-server), SUSE (amazon-ecs-init, containerd, curl, distribution, dracut, ffmpeg-7, fuse-overlayfs, gd, git-lfs, go1.25-openssl, go1.26-openssl, govulncheck-vulndb, hauler, himmelblau, kernel, librest, libssh2_org, open-iscsi, openssh, patch, perl-Date-Manip, podman, postgresql14, postgresql16, python-cryptography, python-Pillow, python311, rmt-server, rootlesskit, rpm, rsync, runc, snpguest, sssd, suseconnect-ng, unbound, and util-linux), and Ubuntu (curl, ffmpeg, linux-aws-6.8, linux-azure-fde, linux-azure-fde-6.8, linux-azure-fips, linux-nvidia-tegra, linux-azure, linux-azure-fde, linux-azure, linux-azure-fde, linux-nvidia-tegra-igx, linux-azure-5.4, linux-azure-fips, linux-oracle, linux-raspi, linux-raspi-realtime, openjdk-17, openjdk-21, openjdk-25, openjdk-8, openjdk-lts, openssl, perl, and vim).

Version 26.8 of the LibreOffice suite has been released.

LibreOffice 26.8 concentrates on three areas: the typographic quality of what the suite produces, the range of writing systems it handles correctly, and the fidelity with which documents survive exchange with other office suites.

The largest single body of work in this release addresses bidirectional and complex text. Writer now detects paragraph direction automatically when documents or plain text are opened or pasted. Line wrapping places end-of-line spaces according to the direction of the paragraph rather than that of the adjacent characters. Object resize handles behave correctly in right-to-left and vertical CJK documents. Bidirectional control characters are now visible alongside other formatting marks. In Calc, typing right-to-left text into an empty cell sets the direction of that cell automatically.

See the release notes for a full list of changes.

For people who would like to experiment with the multi-kernel Linux concept, Cong Wang has announced the release of mklinux v7.0-mk2.

mklinux lets one machine run several independent Linux kernels at the same time on bare metal, without a hypervisor. A host kernel owns a pool of CPUs, memory and PCI devices, carves that pool into instances, and boots a spawn kernel into each instance through kexec_file_load(). Every spawn kernel runs natively on its own CPUs, its own physical memory and its own devices. Nothing is emulated and nothing is trapped; the only thing shared is what you choose to share.

Note that this is not the old MkLinux, which was a port to PowerPC Macintosh systems.

Remind is a command-line calendar and alarm program, with an optional Tk-based graphical interface, for Linux and Unix-like operating systems. It has its own scripting language that allows users to create reminders that are difficult (if not impossible) to specify in other calendaring programs. It is wholly unsuitable for use in corporate environments that require calendar sharing and exchanging meeting invitations; however, it may be precisely the calendaring tool for users who prefer the command line and fast, flexible tools that can help keep track of messy schedules.

Vanilla OS 3, an immutable desktop Linux distribution, has been released. Notable changes in this release include support for Arm64, introduction of a Vanilla OS SDK, a rewrite of the Apx package manager using the new SDK, and much more. LWN covered Vanilla OS 2 in 2024.

Security updates have been issued by AlmaLinux (cups-filters, gstreamer1-plugins-base, gstreamer1-plugins-good, kernel, mrtg, NetworkManager, nginx, nginx:1.24, nodejs24, perl-Date-Manip, python-pyasn1, python-urwid, python3.12, python3.14, and qemu-kvm), Debian (erlang, thunderbird, webkit2gtk, and zfs-linux), Fedora (calibre, chromium, freeipa, java-21-openjdk, java-21-openjdk-portable, java-25-openjdk, java-latest-openjdk, jfrog-cli, kernel, libxls, nextcloud, perl-URI, and samba), Gentoo (Incus), Mageia (kernel and kernel-linus), Oracle (ansible-core, cups-filters, curl, firefox, kernel, libcupsfilters, libreoffice, mrtg, NetworkManager, perl-Date-Manip, php:8.2, php:8.3, python-urwid, python3.14, qemu-kvm, and sqlite), Red Hat (assertj-core, httpd, and osbuild-composer), SUSE (buildah, comfyui, dracut, erlang, erlang27, grafana, kernel, libssh2_org, openvswitch, perl-Dancer2-Plugin-Auth-Extensible, postgresql17, python-cryptography, python-sqlparse, python311, python313-hpack, rpm, suseconnect-ng, thunderbird, and vim), and Ubuntu (async-http-client, curl, and ffmpeg).

Practical quantum computers have been ten years away for the last several decades. Now, however, it's beginning to look as though they will be possible in just a few years. Recent research with obfuscated results demonstrated much lower memory requirements to factor ECDSA keys on a quantum computer, with work by other researchers in the open more than halving memory use compared to the state of the art in 2023. At the same time, computer manufacturers are boasting quantum processors that retain viable superpositions over longer periods. Given how slowly software updates filter out to stable systems, it's worth looking at what configuration changes and protocol updates are needed to be safe from quantum computers now.