UWN Issue 951 June 28 - July 4, 2026.

Welcome to the Ubuntu Weekly Newsletter, Issue 951 for the week of June 28 - July 4, 2026.

In this Issue

  • pedit COW kernel local privilege escalation vulnerability mitigations
  • DirtyClone Linux kernel local privilege escalation vulnerability fixes available
  • Ubuntu 25.10 loses security updates this week
  • Welcome New Members and Developers
  • Ubuntu Stats
  • Hot in Support
  • Rocks Public Journal; 2026-07-03
  • Other Meeting Reports
  • Upcoming Meetings and Events
  • Ubuntu Circles! (LoCo) News
  • Event report - UbuCon Europe @ OpenSouthCode 2026
  • Everything Ubuntu at Open Source Summit and KubeCon India 2026
  • Ubuntu @ PyCon Kenya 2026
  • Cerquem lloc per a la propera festa ubuntaire
  • UbuCon India 2026 - Volunteer Application
  • Ubuntu Circles! (LoCo) Events
  • Kernel SRU schedule for July/August 2026
  • Event Report - PyCon Italy 2026
  • The Rock Garden Grows: Hardening Old Docker Images
  • Ubuntu at DevConf.CZ 2026
  • Try the upki preview for Ubuntu!
  • Ubuntu Server Gazette - Issue 16 - Does pollinate still earn its place on every Ubuntu boot in 2026?
  • What Say You
  • Meet the Members: wgarcia
  • Canonical News
  • In the Blogosphere
  • Featured Audio and Video
  • Updates and Security for Ubuntu 22.04, 24.04, 25.10, and 26.04
  • And much more!

General Community News

pedit COW kernel local privilege escalation vulnerability mitigations

Luci Stanescu alerts us to mitigations being available for CVE-2026-46331 which is a recent local privilege escalation vulnerability known as “pedit COW”. We’re given details of the vulnerability; that its CVSS 3.1 score is 7.8 or “high”, the list of releases & impact, and how we can check if we’re impacted. Details on manual mitigation are included.

https://ubuntu.com/blog/pedit-cow-linux-vulnerability-fixes-available

DirtyClone Linux kernel local privilege escalation vulnerability fixes available

Luci Stanescu this time alerts us to CVE-2026-43503 known as “DirtyClone”. It has a CVSS 3.1 score of 8.8 which is “high”. Details are provided. We’re given the details on affected releases, how to check if we’re impacted, and a list of package versions which contain the fixes. We are reminded to upgrade our systems.

https://ubuntu.com/blog/dirtyclone-linux-vulnerability-fixes-available

Ubuntu 25.10 loses security updates this week

Joey Sneddon reminds us that Ubuntu 25.10 reaches End of Life on 9 July 2026; thus users should upgrade to Ubuntu 26.04 LTS so as to continue receiving security updates. Joey reminds us of some details of Ubuntu 25.10, the consequences of running on an End of Life release, and touches on the benefits of upgrading to the newer Ubuntu 26.04 LTS too.

https://www.omgubuntu.co.uk/2026/07/ubuntu-2510-eol-july-9-2026

Welcome New Members and Developers

Congratulations to this contributor!

Ubuntu Stats

Bug Stats

  • Open: 136830 (+65)
  • Critical: 304 (0)
  • Unconfirmed: 72655 (+24)

As always, the Bug Squad needs more help. If you want to get started, please see: https://wiki.ubuntu.com/BugSquad

Translations

  • Swedish: 100.00% (0/1461)
  • Albanian: 98.86% (4000/7)
  • Ukrainian: 89.38% (37308/1708)
  • German: 87.17% (45067/348)
  • French: 85.78% (49923/6411)

Hot in Support

Ubuntu Community Discourse Trending Top 5 Threads

Find more support at: https://discourse.ubuntu.com/c/support-and-help/306

Ask Ubuntu Top 5 Questions

Ask (and answer!) questions at: https://askubuntu.com

Meeting Reports

Rocks Public Journal; 2026-07-03

The Ubuntu rocks in Docker Hub are getting support for ppc64el and s390x architectures.
Also, you can now slice ESM packages for Ubuntu 26.04 too, with Chisel.

Other Meeting Reports

Upcoming Meetings and Events

Times shown are UTC unless otherwise specified. For more details and further dates please visit: https://ubuntu.com/community | https://discourse.ubuntu.com/upcoming-events

Ubuntu Circles! (LoCo) News

Event report - UbuCon Europe @ OpenSouthCode 2026

Mauro Gaspari gives us an event report for UbuCon Europe 2026 held in La Térmica on June 26th and 27th as part of OpenSouthCode. We’re shown numerous photos, given a list of talks, workshops and activities which includes a brief write up on them. Included also is a discussion on OpenSouthKids, and we’re shown many of the kid’s drawings for the next Ubuntu’s 26.10 ‘stonking stingray’ mascot. Finally we’re told how we can get involved too.

https://discourse.ubuntu.com/t/event-report-ubucon-europe-opensouthcode-2026/84713/

Everything Ubuntu at Open Source Summit and KubeCon India 2026

Soundarya Rangarajan tells us of a ‘flurry of in-person’ events in the Indian open source and cloud space. We’re given details of these events, shown some photos, before being invited to join them with some links provided.

https://discourse.ubuntu.com/t/everything-ubuntu-at-open-source-summit-and-kubecon-india-2026/84714/

Ubuntu @ PyCon Kenya 2026

Mauro Gaspari has posted details of Ubuntu at PyCon Kenya 2026 which will be held on October 2, 2026. We’re shown a photo of a past event, and given some links and details.

https://discourse.ubuntu.com/t/ubuntu-pycon-kenya-2026/84716

Cerquem lloc per a la propera festa ubuntaire

Walter Garcia Fontes (in Catalan) reminds the Ubuntu Catalan community of the parties held for each Ubuntu release. This post asks for involvement in the next party, which will be in October (Ubuntu 26.10).

https://discourse.ubuntu.com/t/cerquem-lloc-per-a-la-propera-festa-ubuntaire/84749

UbuCon India 2026 - Volunteer Application

Soumyadeep Ghosh makes a request to designing and graphics ‘folks’ who are willing to participate in the UbuCon India 2026 ( November 14th and 15th ) event to join the core crew. Those desiring to respond may do so via the Mastodon post, or the provided form link.

https://ubuntu.social/@soumyadghosh/116862289722637865 | https://docs.google.com/forms/d/e/1FAIpQLSffNcZF95Jaf-S0XRdxZBWN9HFvffaXNMJFdJcPabBViyfXng/viewform

Ubuntu Circles! (LoCo) Events

The following LoCo team events are currently scheduled in the next two weeks:

Looking beyond the next two weeks? Visit the respective Circles!/LoCo Team calendar to browse upcoming events.

Please also see:

The Hub

Kernel SRU schedule for July/August 2026

Kleber Souza gives notice and the days for the altered SRU schedule for the coming months (late June to early August) of 2026.

https://discourse.ubuntu.com/t/kernel-sru-schedule-for-july-august-2026/84630

Event Report - PyCon Italy 2026

Juan Luis Cano has published an event report on attending PyCon Italy 2026. This report includes a “roundup of our favorite sessions” with links for more details, and numerous photos. This is a detailed report.

https://discourse.ubuntu.com/t/event-report-pycon-italy-2026/84663

The Rock Garden Grows: Hardening Old Docker Images

Alejandro Santisteban Corchos tells us of a “hard transformation” for several classic Ubuntu images on ECR and Docker Hub. We’re given details of this and the new builds on resolute, and shown a graphic highlighting the much smaller image size. Numerous CVEs found by Snyk are touched on, before we’re walked through examining logs, checking pebble health and more. Covered are the Apache2, Nginx, Bind9, Memcached, Squid rocks.

https://discourse.ubuntu.com/t/the-rock-garden-grows-hardening-old-docker-images/84677/

Ubuntu at DevConf.CZ 2026

Din Music gives us an event report of Ubuntu at DevConf.CZ 2026 held in Brno on June 18-19 2026. Along with some photos, talks are covered, as are booth conversations. Thanks are given to DevConf.CZ organizaers, volunteers, speakers, attendees and more, with special thanks to Michal Koutek for helping at the booth.

https://discourse.ubuntu.com/t/event-report-ubuntu-devconf-cz-2026/84696

Try the upki preview for Ubuntu!

Jon Seager updates us on the development of upki, and tells us of a released beta version of the CLI tool and library; which is available as preview on Ubuntu 26.04 LTS and Ubuntu 26.10 snapshots. We’re reminded the preview is experimental, and given details on upki if we need a refresher. This post gives us some details of how we can use this new preview on our systems, before touching on what’s next, and thanking Dirkjan Ochtman, Joe Birr-Pixton and Julian Andres Klode.

https://discourse.ubuntu.com/t/try-the-upki-preview-for-ubuntu/84705/

Ubuntu Server Gazette - Issue 16 - Does pollinate still earn its place on every Ubuntu boot in 2026?

Christian Ehrhardt reminds us that pollinate was introduced back in Ubuntu 14.04 LTS, before noting our world has changed and so has entropy effects on boot. Christian goes through various testing he did on various generations of processors, briefly covering advances in some Intel CPUs since 2012. We’re walked through the logic that shows resolute is faster without pollinate.

https://discourse.ubuntu.com/t/ubuntu-server-gazette-issue-16-does-pollinate-still-earn-its-place-on-every-ubuntu-boot-in-2026/84735/

What Say You

Meet the Members: wgarcia

“I’m an economist, working as a university professor. Because of my research I started using open source software many years ago, Linux was not stil alive. Back in 2006 I installed Ubuntu (the 06.10 Edgy Eft version) after a computer virus left my laptop unusable being on the road and about to teach with all my teaching material there. Soon after, I contacted my Loco team, which I help create, and until now. …”

https://discourse.ubuntu.com/t/meet-the-members-wgarcia/84678

Canonical News

In the Blogosphere

Ubuntu’s ‘Myna’ project lets you talk instead of type – what is it?

Joey Sneddon writes about Ubuntu adding AI features such as the speech-to-text tool named Myna, and the ‘agentic’ era. This post is written in what Joey calls the ‘Explainer format’.

https://www.omgubuntu.co.uk/2026/06/what-is-myna-ubuntu-ai-dictation

RADV & RadeonSI Drivers See New Fixes For AMD GCN 1.0/1.1 GPUs

Michael Larabel tells us that Timur Kristóf, of Valve’s Linux graphics driver team, has more fixes for AMD Radeon GCN 1.0 and GCN 1.1 era GPUs and gives us enlightening details. We’re given a quote from the RADV patch which outlines the fix, as well as other details, including coverage of other patches that are included in the merge.

https://www.phoronix.com/news/RADV-L2-Flush-Fix-GFX6-GFX7

NVIDIA Working On New “TLV” Firmware Binary Format For Nova Driver

Michael Larabel informs us that NVIDIA engineers have created a new TLV binary firmware format that allows easier parsing of their Rust-based driver code. We’re given a quote from Timur Tabi of NVIDIA outlining some of the changes, and a link to the mailing-list for more details.

https://www.phoronix.com/news/NVIDIA-Nova-Driver-TLV

Ubuntu 26.04 LTS has fixed its missing video/audio thumbnails

Joey Sneddon writes that it was a ‘packaging oversight’ that was ‘to blame’ for video and music files not showing image thumbnails in filemanager in Ubuntu 26.04 LTS. Joey outlines the problem and mentions a fix for ‘blank media icons’, but also reports a stable release update (SRU) should have already fixed the problem for those that apply updates regularly.

https://www.omgubuntu.co.uk/2026/07/ubuntu-2604-video-audio-thumbnails-fix

Linux 7.2-rc2 BPF Code Being Hardened Against JIT Spraying Attacks

Michael Larabel blogs that the Linux 7.2-rc2 has a merge that hardens the kernel against JIT spraying attacks. We’re given details, including a quote from Intel engineer Pawan Gupta who landed the patch that does this, with mention of another landed patch also included in the merge.

https://www.phoronix.com/news/Linux-7.2-rc3-BPF-Hardening

Rust Coreutils cp Ended Up Breaking Ubuntu Image Builds With Latest Incompatibility

Michael Larabel lets us know that it was Rust Coreutils cp command that was breaking recent Ubuntu image builds. We’re given details and links to the launchpad bug report, and told that most “kinks have been worked out”.

https://www.phoronix.com/news/Rust-Coreutils-cp-Ubuntu-Images

Featured Audio and Video

Ubuntu OnAir: Mir Office Hours 1st July 2026

Agenda: API and toolchain clean slate. planning a release by mid-August (lots of time off in the team before then). There’s a mir-rs API brewing in RFC.

https://www.youtube.com/watch?v=1Ko_a7P7U-A

Updates and Security for Ubuntu 22.04, 24.04, 25.10, and 26.04

Security Updates

Ubuntu 22.04 Updates

End of Standard Support: April 2027

Ubuntu 24.04 Updates

End of standard support: April 2029

Ubuntu 25.10 Updates

End of Life: July 9, 2026

Ubuntu 26.04 Updates

End of Standard Support: April 2031

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