The extensible scheduler class (sched_ext) allows the installation of custom CPU schedulers as a set of BPF programs. While sched_ext, in its current form, has already led to a lot of interesting scheduler-development work, the subsystem itself is still undergoing rapid evolution. Among other work, the ability to set up a hierarchy of sub-schedulers is approaching completion, and a longstanding incompatibility with proxy execution is coming to an end.

Security updates have been issued by AlmaLinux (cups, git-lfs, kernel, libsolv, libxml2, python3.12, and python3.9), Debian (chromium, dhcpcd5, and ntfs-3g), Fedora (firefox, perl-Imager, python-bcrypt, python-tiktoken, roundcubemail, and xrdp), Mageia (openssl, poppler, python-mistune, and tmux), Oracle (389-ds-base, cups, git-lfs, glibc, host-metering, kernel, libsolv, libxml2, nginx:1.24, PackageKit, python-pillow, and qemu-kvm), Red Hat (buildah, containernetworking-plugins, and skopeo), SUSE (buildah, cosign, curl, distribution, dnsmasq, glib-networking, glibc, gnutls, gstreamer-plugins-bad, ImageMagick, kernel, podman, python-cryptography, python313-django-debug-toolbar, rekor, sccache, sssd, and yelp), and Ubuntu (dotnet8, dotnet10, libslirp, luajit, python-idna, sympa, and tomcat8).

Inside this week's LWN.net Weekly Edition:

• Front: Fighting scraper bots; io_uring queues; Filesystem testing; BPF shielding; Sending packets from BPF; Kitty; QBE.
• Briefs: Shim security; seunshare vulnerability; Debian bookworm; Rust 1.97.0; Linux.org; Quotes; ...
• Announcements: Newsletters, conferences, security updates, patches, and more.