In a shortened session in the filesystem track at the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit, Amir Goldstein gave an update on the overlayfs union filesystem. There are some new features over the last few years that he wanted to mention, along with looking at the status of nesting overlayfs layers. The composefs use case that was discussed at the summit in 2023 has led to some interesting changes to overlayfs.

Hundreds of orphaned packages hosted by the Arch User Repository (AUR) have been compromised by an attacker who has added a malicious npm package (atomic-lockfile) that can exfiltrate sensitive data. The project is currently working on cleaning up the mess. There is a list of affected packages and post (possibly NSFW domain) by "sodiboo" with additional information. Arch Linux users (or users of Arch-based distributions) that use AUR packages may wish to see if they have installed any of the compromised updates.

Security updates have been issued by AlmaLinux (.NET 10.0, .NET 8.0, .NET 9.0, bind, expat, httpd:2.4, kernel, kernel-rt, mod_http2, openssl, poppler, redis, redis:7, samba, and unbound), Debian (ironic, kernel-wedge, libinput, linux-base, and neutron), Fedora (kernel, openssl, vaultwarden, and vaultwarden-web), Mageia (erlang-hex_core, erlang-rebar3, gnupg2, and sqlite3), Red Hat (buildah, podman, and skopeo), SUSE (flannel, gdk-pixbuf-loader-libheif, gnutls, google-cloud-sap-agent, grafana, graphite2, hplip, libIex-3_4-33, libzypp, nginx, openssh, perl-DBI, perl-Git-Repository, perl-Protocol-HTTP2, python-Pygments, python-simpleeval, python311-Django4, rclone, roundcubemail, strongswan, tomcat10, tomcat11, unbound, and webkit2gtk3), and Ubuntu (apache2, dotnet8, dotnet9, dotnet10, gst-plugins-base1.0, ironic, linux-azure-5.15, linux-azure-fips, lwip, mistral, and ubuntu-kylin-software-center).