# Ubuntu project

> This documentation provides guidance for contributors to and maintainers of the Ubuntu Linux distribution. It covers processes and concepts, as well as project governance and team workflows. There are instructions for packaging, merging, proposed migrations, autopkgtests, and many other procedures for maintaining the Ubuntu Archive and releasing the distribution.


2026

## Pages in this subsection

- [Reference](https://documentation.ubuntu.com/project/SRU/reference.md): This reference section contains technical information about the SRU workflow.
- [SRU bug template](https://documentation.ubuntu.com/project/SRU/reference/bug-template.md): The SRU bug template is used to document the justification, regression potential, and
- [Status pages](https://documentation.ubuntu.com/project/SRU/reference/status.md): - **Pending sponsorship**: general sponsorship
- [Requirements](https://documentation.ubuntu.com/project/SRU/reference/requirements.md): *Governance note: policy decisions on the broad criteria described in
- [Special types of SRU](https://documentation.ubuntu.com/project/SRU/reference/special.md): What is acceptable to SRU, together
- [Package-specific notes](https://documentation.ubuntu.com/project/SRU/reference/package-specific.md): See also: Explanation → Non-standard Processes → Package-specific
- [Kernel security and update policy for post-release trees](https://documentation.ubuntu.com/project/SRU/reference/exception-Kernel-Updates.md): This document describes the process and criteria for post-release kernel
- [Apt Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Apt-Updates.md): The APT developers (https://launchpad.net/~deity) maintain upstream
- [azure-proxy-agent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Azure-Proxy-Agent-Updates.md): This document describes the process to update and test new versions of the
- [azure-vm-utils Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Azure-VM-Utils-Updates.md): This page describes the policy for updating the azure-vm-utils source package with
- [Bind9 Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Bind9-Updates.md): This document describes the policy for doing micro-release updates of
- [Certbot Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Certbot-Updates.md): This document describes the policy for updating the Certbot-related
- [cloud-init Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Cloudinit-Updates.md): This document describes the policy for updating cloud-init in a stable,
- [Crash and Makedumpfile Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-CrashMakedumpfile-Updates.md): This document describes the policy for introducing new upstream- and
- [Curtin Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Curtin-Updates.md): This document describes the policy for updating Curtin in a stable,
- [DPDK Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-DPDK-Updates.md): This page describes the policy for updating the src:dpdk package in
- [Container Stack Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Docker-Updates.md): This document describes the policy for updating the docker.io group of
- [GNOME Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-GNOME-Updates.md): GNOME had a micro release exception granted by the Technical Board in
- [Process for SRUing GRUB](https://documentation.ubuntu.com/project/SRU/reference/exception-Grub-Updates.md): There is no SRU “exception” for GRUB. Criteria for acceptance remains
- [HAProxy Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-HAProxy-Updates.md): This document describes the policy for doing micro-release updates of
- [Intel Graphics Stack Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Intel-Graphics-Updates.md): This document describes the policy for doing updates of the Intel graphics
- [Landscape updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Landscape-Updates.md): This document describes the policy for updating Landscape Client
- [MariaDB and Galera Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-MariaDB-Galera-Updates.md): This document describes the policy for doing microrelease updates of the MariaDB
- [multipath-tools Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-multipath-tools-Updates.md): This document describes the policy for doing microrelease updates of the multipath-tools package in ...
- [NVIDIA GPU Driver Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-NVidia-Updates.md): This document describes the policy, process and criteria for updating
- [Netplan Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Netplan-Updates.md): This document describes the policy for updating netplan.io in a stable,
- [OEM Meta Package Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-OEMMeta-Updates.md): These packages exist to hint parts of the installer / upgrade tooling
- [OpenJDK Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-OpenJDK-Updates.md): This document describes the policy for updating the openjdk-N packages,
- [OpenLDAP Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-OpenLDAP-Updates.md): This document describes the policy for doing microrelease updates of the
- [Stable Release Updates for OpenStack and the Ubuntu Cloud Archive](https://documentation.ubuntu.com/project/SRU/reference/exception-OpenStack-Updates.md): The SRU process for !OpenStack and the Ubuntu Cloud Archive (UCA)
- [OpenVMTools Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-OpenVMTools-Updates.md): Approved: RAOF (2024/01/25)
- [OpenVPN Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-OpenVPN-Updates.md): This document describes the policy for doing micro-release updates of
- [Postfix Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Postfix-Updates.md): This document describes the policy for updating the Postfix package in a
- [PostgreSQL Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-PostgreSQL-Updates.md): This document describes the policy for doing microrelease updates of the
- [Snapcraft Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Snapcraft-Updates.md): This document describes the policy for updating the snapcraft package in
- [Snapd Glib Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-SnapdGlib-Updates.md): This document describes the policy for updating the snapd-glib
- [Snapd Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Snapd-Updates.md): This document describes the policy for updating the snapd package in a
- [Sos / SosReport Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Sosreport-Updates.md): This document describes the policy for updating sosreport & sos package
- [Squid Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Squid-Updates.md): This document describes the policy for doing micro-release updates of
- [Ubuntu-Advantage-Tools / Ubuntu-Pro-Client Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-UbuntuAdvantageTools-Updates.md): Ubuntu Pro is a suite of additional services provided by Canonical on
- [UbuntuDevTools Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-UbuntuDevTools-Updates.md): This document describes the policy for updating the ubuntu-dev-tools
- [ubuntu-image Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-UbuntuImage-Updates.md): This document describes the policy for updating the ubuntu-image package
- [Stable Release Updates for Virtualbox Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Virtualbox-Updates.md): Virtualbox has a number of features making it a special case for SRUs -
- [autopkgtest Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-autopkgtest-Updates.md): This document describes the policy for updating autopkgtest in a stable,
- [ec2-hibinit-agent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-ec2-hibinit-agent-Updates.md): This document describes the policy for updating the ec2-hibinit-agent
- [Firmware Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-firmware-updates.md): This document describes the policy for updating the fwupd, fwupdate,
- [GCE compute image packages update](https://documentation.ubuntu.com/project/SRU/reference/exception-gce-compute-image-packages-Updates.md): This document describes the policy for updating the
- [Google Compute Engine Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-google-compute-engine-Updates.md): This document describes the policy for updating the
- [Google Compute Engine OSlogin Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-google-compute-engine-oslogin-Updates.md): This document describes the policy for updating the
- [Google Guest Agent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-google-guest-agent-Updates.md): This document describes the policy for updating the google-guest-agent
- [Google OSconfig Agent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-google-osconfig-agent-Updates.md): This document describes the policy for updating the
- [rax-nova-agent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-rax-nova-agent-Updates.md): This document describes the policy for updating the rax-nova-agent
- [Valkey Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-Valkey-Updates.md): This document describes the policy for doing micro-release updates of
- [walinuxagent Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-walinuxagent-Updates.md): This document describes the process to update and test new versions of
- [wslu Updates](https://documentation.ubuntu.com/project/SRU/reference/exception-wslu-Updates.md): This document describes the policy for updating the wslu package to new
- [Historical removals](https://documentation.ubuntu.com/project/SRU/reference/historical-removals.md): - Explanation → Removals
- [Enable proposed](https://documentation.ubuntu.com/project/SRU/reference/enable-proposed.md): Enable the `-proposed` pocket in order to test new packages before they are released to `-updates`.
- [SRU verification](https://documentation.ubuntu.com/project/SRU/reference/sru-verification.md): SRU verification is part of the QA process for an SRU, and is required for each bug associated with ...
- [Team rota](https://documentation.ubuntu.com/project/SRU/reference/rota.md): **Canonical employees**: private messages and private channels are

## Optional

- [Top-level llms.txt](https://documentation.ubuntu.com/project/llms.txt): Complete documentation index.