Version 151.0 of the Firefox browser has been released. Significant changes include the ability to clear and restart a private-browsing session, better fingerprinting protection, control over the apparent location when using the Firefox VPN, and more.

The kernel's this_cpu operations are meant to speed access to per-CPU variables. They are more optimal on some CPUs than others, though. During a memory-management-track session at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Yang Shi proposed a fundamental, and somewhat controversial, change to how these operations work in order to provide better performance on a wider range of architectures.

Compute Express Link (CXL) is a technology intended to enable the provision of "memory nodes" in data centers that provide (possibly shared) memory to nearby CPUs. It has, Dan Williams said at the beginning of his memory-management-track session on the topic at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, "been making memory-management problems worse since 2021". He used the session to provide an overview of the ways in which CXL can be expected to extend that record into the future.

There are many places in the kernel where performance can be improved by using per-CPU data. But, as it turns out, the kernel's allocator for per-CPU data has some performance problems of its own. Harry Yoo led a session in the memory-management track of the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit to explore ways to address those problems and accelerate the allocation and initialization of per-CPU data.

Security updates have been issued by AlmaLinux (libpng and nginx), Debian (erlang, netatalk, and nginx), Fedora (mod_md and SDL2_image), Mageia (perl-libwww-perl, perl-HTTP-Message, perl-WWW-Mechanize-Cached, perl-File-XDG, perl-Path-Tiny, perl-YAML-Syck, postgresql15, and rclone), SUSE (agama, alloy, cacti, cloud-init, dnsmasq, emacs, firefox, glibc, go1.25, go1.26, google-cloud-sap-agent, google-guest-agent, ibus-rime, librime, imagemagick, kernel, libsndfile, nginx, ongres-scram, ongres-stringprep, plexus-testing,, openexr, openssh, PackageKit, perl-Text-CSV_XS, php-composer2, php8, postgresql16, postgresql18, python-lxml, python-python-multipart, python3, python311-urllib3, rmt-server, rsync, tiff, tree-sitter, util-linux, and xen), and Ubuntu (linux, linux-aws, linux-aws-5.4, linux-aws-fips, linux-azure, linux-azure-5.4, linux-azure-fips, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-gcp-fips, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp, linux, linux-aws, linux-kvm, linux-lts-xenial, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-raspi, and linux-xilinx-zynqmp).