Release 2026_012 (2026-04-07)

Impact

25.11

  • Machines will reboot to activate the changed kernel.

  • varnish-7.x is still default for the webproxy role but has known vulnerabilities. Consider updating to varnish-8.0 by setting services.varnish.package = pkgs.varnish80;. Note the breaking changes of that updated.

    • Vulnerability VSV00018 is already mitigated by additional config in our webproxy role.

    • Nonetheless, other upcoming security vulnerabilities will not be fixed for varnish-7.x.

NixOS 25.11 platform

  • gitlab: run container registry migrations for instances that use a database as backend (PL-135270)

  • flyingcircus-physical: show grub-bios bootloader menu over serial console as well (PL-130728)

  • Hotfix upgrade for skvaider (AI API). (PL-135254)

  • provide varnish80 package (PL-135243)

  • Add extra configuration to Varnish’s default VCL that mitigates VSV00018 (FC-52533)

  • fc-ceph: Add locking to internal object storage accounting to prevent race conditions (PL-128135)

  • backy: make whole object diff configurable and disable by default. (PL-134246)

  • Pull upstream NixOS changes, security fixes, and package updates:

    • chromedriver: 146.0.7680.153 -> 146.0.7680.164

    • chromium: 146.0.7680.153 -> 146.0.7680.164

    • discourse: 2025.12.2 -> 2026.1.2

    • firefox: 148.0.2 -> 149.0

    • gitaly: 18.9.2 -> 18.9.3

    • gitlab: 18.9.2 -> 18.9.3

    • gitlab-container-registry: 4.37.0 -> 4.39.0

    • gitlab-ee: 18.9.2 -> 18.9.3

    • gitlab-pages: 18.9.2 -> 18.9.3

    • gitlab-workhorse: 18.9.2 -> 18.9.3

    • grafana: 12.3.5 -> 12.3.6

    • keycloak: 26.5.5 -> 26.5.6

    • linuxKernelStable: 6.12.76 -> 6.12.78

    • linuxKernelVerify: 6.12.76 -> 6.12.78

    • mastodon: 4.5.7 -> 4.5.8

    • matrix-synapse: 1.149.1 -> 1.150.0

    • nginx: 1.28.2 -> 1.28.3

    • nginxMainline: 1.29.5 -> 1.29.7

    • nginxStable: 1.28.2 -> 1.28.3

    • nodejs_20: 20.20.1 -> 20.20.2

    • nss_latest: 3.121 -> 3.122

    • strongswan: 6.0.4 -> 6.0.5

    • uv: 0.9.29 -> 0.9.30

Detailed Changes