New Flatcar Container Linux releases are now available: • Beta 4722.1.0 • Stable 4593.2.4 • LTS-2024 4081.3.9 Here’s what’s included in each release. 🧵
Flatcar Container Linux
@flatcar.org
Flatcar Container Linux is the leading community-driven, container-optimized, auto-updating Linux distribution, homed in the Cloud Native Computing Foundation.
New Flatcar Alpha, Beta and Stable releases now available! 📦 Many package updates: OpenSSH, Kernel, systemd 🔒 CVE fixes & security patches 🚀Oracle Cloud Infrastructure support 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
🚀 New Flatcar releases for all channels now available! 🚀 - Alpha 4694.0.1 - Beta 4628.1.2 - Stable 4593.2.2 - LTS-2024 4081.3.8 #linux #cloudnative #containers #updates
Releases
Releases
flatcar.org
🚨 Fresh Flatcar Alpha, Beta, and Stable releases are now out with Linux 6.12.87 and a large set of kernel security fixes. The recently disclosed Linux “Dirty Frag” privilege escalation flaws are addressed in these releases.
Flatcar is unaffected by Copy Fail (CVE-2026-31431)! The kernel option causing it was never enabled, because Flatcar is minimal by design and only ships what containers need Sometimes the best mitigation is to reduce the attack surface by not shipping vulnerable components 🔒
It's the last Friday of the month! 🛠️ Time for The Maintenance Mode.
🚀 We’re happy to announce a new platform for the Flatcar community - our new Discord server! 💬 Chat with others 🎙️ Join voice discussions 🛠️ Get help and learn 🤝 Contribute and share ideas 📢 Stay up to date with everything Flatcar Join us 👉️ discord.gg/PMYjFUsJyq
Join the Flatcar Container Linux Discord Server!
Flatcar Container Linux is a fully open source, minimal-footprint, secure by default and always up-to-date Linux distribution for running containers at scale. | 16 members
discord.gg
New Flatcar Alpha, Beta and Stable releases now available! 🚀 /etc is now shipped as #systemd confext 🔒 CVE fixes & security patches: CVE-2025-61984 and CVE-2025-61985 for OpenSSH on Stable 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
New Flatcar Alpha, Beta and Stable releases now available! 🔒 Security patches: recent OpenSSL vulnerabilities (openssl-library.org/news/vulnera...) 📜 Release notes at the usual spot: www.flatcar.org/releases/ 📜 To learn more about this kind of security releases: www.flatcar.org/blog/2022/11...
Vulnerabilities | OpenSSL Library
openssl-library.org
🚀 Flatcar Alpha 4547.0.0 released! 📦 Big updates: Linux 6.12.61, Ignition 2.24.0, Go 1.25.3, OpenSSL 3.5.4 🔒 Extensive kernel CVE fixes + coreutils, Go & PAM security updates ✨ Smaller downloads & improved security defaults
📢 Fresh Flatcar releases are baked and served! Alpha 4515.0.1, Beta 4459.1.2, and Stable 4459.2.1 ship with Linux 6.12.58, kernel CVE fixes, improved system extension module loading, Nutanix support and restored SSSD components in Alpha.
We are sure you remember enough your French lessons to understand this great #DevFestNantes2025 talk presenting the Flatcar #Proxmox support implementation with #enix folks! (the auto-caption works fine for those who skipped the lessons 😉) www.youtube.com/watch?v=ZMLL...
From Flatcar development to ProxmoxVE deployment - an example of open and sustainable collaboration
YouTube video by GDG France
youtube.com
Grab your favorite drink, set yourself "in a meeting" and watch this last episode from @rawkode.academy about Flatcar to learn or confirm your knowledge. Thanks @rawkode.dev for the invitation and for maintaining this collection of Cloud Native interviews. www.youtube.com/watch?v=r66D...
Flatcar Linux: A Modern OS for the Always-On Infrastructure
YouTube video by Rawkode Academy
youtube.com
🌅 New day, new Flatcar releases! Alpha 4515.0.0, Beta 4459.1.1, and Stable 4459.2.0 are out with Linux 6.12.54, cgroups v1 kernel config mitigations, and major security updates across the stack. #Flatcar #Linux #ContainerLinux
New Flatcar releases for all channels! 📦 Many package updates: Linux, Podman, curl, etc. 🔒 CVE fixes & security patches: VMScape Spectre variant patched for Linux, etc. 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
The Flatcar main repository has just reached thousand stars on GitHub. Can we all fit into a single Flatcar instance to celebrate this? The answer is yes. Thanks everyone 🌟
New Flatcar releases for all channels now available and last LTS-2023 release! 📦 Many package updates: Podman, Linux, ... 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
At the #FrOSCon for the week-end? Come say "hi/hallo/bonjour !" and as we getting closer to the 1000th star on GitHub, if you star us and you are the 1000th one, come to the booth to receive your Flatcar t-shirt! github.com/flatcar/flat...
July's Maintenance Mode is now ON 🟢 📷 Join us on Jitsi and start contributing to Flatcar Container Linux! There are plenty of exciting issues for grabs - pick one and dive in! 📖This time focus is on documentation. Join us & help make them better. 🔗https://meet.flatcar.org/TheMaintenanceMode
In case you missed it, since the last release STACKIT images are now published on Alpha, Beta and Stable channels. Checkout the documentation to learn more about this freshly supported provider: www.flatcar.org/docs/latest/...
Running Flatcar on STACKIT
Running Flatcar on STACKIT
flatcar.org
New Flatcar Alpha, Beta, Stable, and LTS-2024 releases now available! 📦 Many package updates: Linux, sudo and others 🔒 CVE fixes & security patches: sudo (CVE-2025-32462, CVE-2025-32463) 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
Thanks everyone who contributed to this Friday's Flatcar Maintenance Mode: around 20 issues have been closed on Nebraska and Flatcar issue trackers (including the second oldest issue of the project!), fresh documentation has been written as well (the awaited #proxmox one!)
Flatcar images for #akamai are now fully tested in CI nightlies and before a release. This coverage promotes Akamai support to an official support. Thanks to Akamai for sponsoring infra to run those tests!
Running Flatcar on Akamai Connected Cloud (Linode)
Running Flatcar on Akamai Connected Cloud (Linode)
flatcar.org
LTS-2023 EOL is fast approaching 🚨 LTS-2023 served us well, but its end-of-life is set for July 30th, 2025, and it's fast approaching. If you're still on this channel, please upgrade to LTS-2024 soon. For any issues, feel free to reach out to us on Matrix.
Maintenance Mode is now ON 🟢🔘 Join us on Jitsi and start contributing to Flatcar Container Linux! There are plenty of exciting issues up for grabs - pick one and dive in! 🔗 meet.flatcar.org/TheMaintenan...
Flatcar Container Linux@flatcar.org · last yr.📣 "Bug Smashing Fridays" is now "Maintenance Mode" and it kicks off this Friday! 🛠️ We're diving into bug triage, docs polish, and general maintenance to keep Flatcar Container Linux clean and resilient. Open source folks — join us and help shape a stronger Flatcar! 💪🐧
📣 "Bug Smashing Fridays" is now "Maintenance Mode" and it kicks off this Friday! 🛠️ We're diving into bug triage, docs polish, and general maintenance to keep Flatcar Container Linux clean and resilient. Open source folks — join us and help shape a stronger Flatcar! 💪🐧
New Flatcar Alpha, Beta, Stable releases now available! 📦 Many package updates: Linux, Go, nvidia-drivers 🔒 CVE fixes & security patches: Linux, curl, wget 📜 Release notes at the usual spot: www.flatcar.org/releases/
Releases
Releases
flatcar.org
We are LIVE🔴 on Jitsi now. Join us on our Jitsi stream and help triage bugs on our Tracker. meet.flatcar.org/BugSmashingDay
Flatcar Container Linux@flatcar.org · last yr.🗓️ Bug Smashing Friday is here! Let’s kick off the first Friday of June by stomping bugs and triaging issues in the Flatcar Container Linux tracker. Join us in cleaning up, categorizing, and closing bugs to help make Flatcar even more robust! 🔗 github.com/flatcar/Flat...
🗓️ Bug Smashing Friday is here! Let’s kick off the first Friday of June by stomping bugs and triaging issues in the Flatcar Container Linux tracker. Join us in cleaning up, categorizing, and closing bugs to help make Flatcar even more robust! 🔗 github.com/flatcar/Flat...