🚀 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

🚨 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

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/

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...

🚀 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...

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...

🌅 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/

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/

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...

Attending to #FrOSCon this year is a good opportunity to: learn about Flatcar and discuss your use-cases with some Flatcar's maintainers (at the Flatcar booth and/or during the social event). See you there! #systemd #sysext #linux #flatcar #OpenSource #DevOps

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/...

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/

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!

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...

📣 "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/

We are LIVE🔴 on Jitsi now. Join us on our Jitsi stream and help triage bugs on our Tracker. meet.flatcar.org/BugSmashingDay

🗓️ 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...

New Flatcar Alpha 4344.0.0 release now available! 📦 Many package updates: Kernel, Docker, Containerd, Amazon SSM agent 🔒 CVE fixes & security patches 📜 Release notes at the usual spot: www.flatcar.org/releases/ 🚀 Read this thread for the new features highlight

Announcing new Flatcar Beta, Stable and LTS-2024 maintenance releases! 📦 Package updates: Linux, ca-certificates 🔒 CVE fixes & security patches: Linux 📜 Release notes at the usual spot: www.flatcar.org/releases/

Announcing new Flatcar Alpha, Beta, Stable, LTS-2024, LTS-2023 releases! 🚀 New features: EROFS support for systemd-sysext, experimental secure boot 🔒 CVE fixes & security patches: Linux, intel-microcode, curl & more 📦 Package updates 📜 Release notes at the usual spot: www.flatcar.org/releases/

🚨 Attention Flatcar users: We're deprecating cgroups v1 to enhance performance and security. Transition to cgroups v2 to stay updated. For more details, visit our release notes: www.flatcar.org/releases

OpenSSH CVE fixes are now available in the new Flatcar Alpha, Beta, Stable, LTS-2024 releases! 🔒 CVE fixes & security patches: OpenSSH (CVE-2025-26465, CVE-2025-26466) 📜 Release notes at the usual spot: www.flatcar.org/releases/

🚀 New Blog Post Alert! 🚀 We had an incredible time at #FOSDEM2025! From showcasing Gentoo on an Amiga to engaging with the OS community, it was an unforgettable experience. Read abbot our journey and 🐧 www.flatcar.org/blog/2025/02...

@linusmediagroup.com's latest video -POV: When you realize deploying your own VPN can be simple and secure with Flatcar #Flatcar #VPN #LinusTechTips www.youtube.com/watch?v=St-I...

Did you know the Flatcar is built from Gentoo Linux? Join Chewi a maintainer of both projects (github.com/chewi) and see how they work together. fosdem.org/2025/schedul...

What does it give to mix Cluster API, systemd-sysext and immutable OS? Find out in Thilo Fromm(github.com/t-lo) talk at FOSDEM: fosdem.org/2025/schedul...

Next stop: Flatcar OS on RISC-V! 🚀 Check out Adrian Vladu (github.com/ader1990) talk at #FOSDEM2025 on adding RISC-V support to your OS! 🌟 fosdem.org/2025/schedul...

We spoke with Danielle Tal, Product Manager at Microsoft, about how @flatcar.org Container Linux ensures security with its immutable filesystem, automated updates, and focus on compliance. Full Episode

Anyone know of a public example of using Ignition/Butane on @flatcar.org to bootstrap @kubernetes.io?

"Flatcar was one of the projects that caught my eye at KubeCon this year. What I found interesting about it is that it is a Linux distribution tailored to run containers." virtualizationreview.com/Articles/202...

🎄With the holidays upon us, all of us on the Flatcar team wish you a secure, immutable Christmas and a declaratively provisioned New Year!

Great opportunity to join the Kubernetes release team and learn what it takes to ship Kubernetes!

❗ Heads-up, this latest Flatcar Stable release will graduate to LTS in early 2025!

New releases out now! 📦 Many updates: OpenSSL, Kernel, Podman (yes, Podman ships as an optional container runtime sysext these days!) 🔒 CVE fixes: OpenSSL, Kernel 📜 More here: www.flatcar.org/releases/ #Linux #ContainerLinux #Podman #CloudNative #CNCF

Latest WasmEdge community meeting included discussion of baking a #WasmEdge systemd-sysext for Flatcar, as demo’d on the @microsoft.com Azure booth at KubeCon in Salt Lake City last month. youtu.be/UcDzSrXx0tg

Cyber Monday Special!! Today only: 100% discount on every Flatcar release channel, including LTS. Get your Cyber Monday downloads here: www.flatcar.org/releases

Welcome back from Thanksgiving! We're all back at work and on our #MemeMonday game.

Check out this video of Mathieu Tortuyaux (Microsoft) and Julian Tölle (Hetzner) sharing their knowledge about Flatcar, and what's new including system composability and support of more cloud providers including Hetzner! media.ccc.de/v/froscon202...