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 Stable 4459.2.2 available now!
📦 Linux updated to 6.12.61 with latest ca-certificates
🔒 Security-focused release with a large Linux kernel CVE fix set
🛡️ Recommended update for all Stable users
🧪 Flatcar Beta 4515.1.0 is out!
📦 Updated to Linux 6.12.61 + refreshed ca-certificates
🔒 Major Linux kernel CVE rollup and multiple userspace security fixes
✨ New minimal first-stage initrd & larger partitions (from Alpha)
🚀 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
🛡️ Stable: Linux 6.12.58 + udev fix for module loading
⚙️ Beta: Same kernel & fixes as Stable
🚀 Alpha: Adds back missing LDB modules (fixes SSSD) + improved sysext module loading
📜 Releases in the usual place:
www.flatcar.org/releases/
📢 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...
📜 Releases in the usual place:
www.flatcar.org/releases/
#Flatcar #ContainerLinux #Release
🚀 Alpha 4515.0.0 → runc vuln fixes ✅, plus OpenSSH/OpenSSL/Intel/NVIDIA CVEs, Azure image shrunk to 30 GB, Fusion SCSI disk drivers are back, and
refreshed SDK & firmware.
⚙️ Beta 4459.1.1 → runc vuln fixes ✅, kernel CVE fixes, DHCP/TUN-TAP conflict fix, cgroups v1 mitigation, and improved Intel µcode handling.
🛡️ Stable 4459.2.0 → runc vuln fixes ✅ + Linux 6.12.54, new overlaybd sysext, Hyper-V using systemd-sysext layering, cgroups v1 mitigation, and CVE patches for OpenSSH, OpenSSL, curl, git, libxml2, NVIDIA, Intel µcode & more.
🚨 All channels include critical fixes for runc vulnerabilities -
CVE-2025-31133, CVE-2025-52565, CVE-2025-52881. Update soon to stay safe!
#Flatcar #Security #runc
🌅 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/
A SSH connection on a Flatcar instance with a thousand star emoji
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...
On Sunday 17th 4:00pm, fosstodon.org/@tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. programm.froscon.org/2025/events/...
#systemd #sysext #linux #flatcar #OpenSource #DevOps #FrOSCon
On Saturday 16th 6:15pm, fromm.social/@thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. programm.froscon.org/2025/events/...
#systemd #sysext #linux #flatcar #OpenSource #DevOps #FrOSCon
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 live now on Jitsi! The event is an all day event on Friday, July 25, 2025. 9 AM CEST.
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!
An image of LTS-2023 end-of-life on 30th July 2025 text represented as Star Wars Intro text
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...
