Flatcar Container Linux
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flatcar.org
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.
🛡️ 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/
November 27, 2025 at 1:27 PM
Releases
Releases
www.flatcar.org
November 12, 2025 at 5:17 PM
🚀 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.
November 12, 2025 at 5:17 PM
⚙️ Beta 4459.1.1 → runc vuln fixes ✅, kernel CVE fixes, DHCP/TUN-TAP conflict fix, cgroups v1 mitigation, and improved Intel µcode handling.
November 12, 2025 at 5:17 PM
🛡️ 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.
November 12, 2025 at 5:17 PM
🚨 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
November 12, 2025 at 5:17 PM
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
Workshop: Extending image based systems using Systemd system extensions | Sunday | Schedule FrOSCon 2025
programm.froscon.org
August 11, 2025 at 12:39 PM
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
Lecture: Immutable Turtles All the Way Down | Saturday | Schedule FrOSCon 2025
programm.froscon.org
August 11, 2025 at 12:39 PM