Flatcar Container Linux

Flatcar is the leading community-driven, auto-updating Container Linux distro. A CNCF incubating project.
Also at: 🐘 @[email protected] / 🦋 @flatcar.org

[Flatcar Container Linux @flatcar]

@LinusTech's latest video - POV: When you realize deploying your own VPN can be simple and secure with Flatcar #Flatcar #VPN #LinusTechTips
https://t.co/DqkAbjaU5f

[Flatcar Container Linux @flatcar]

📜 Release notes at the usual spot: https://t.co/rZjTiO6fY2

[Flatcar Container Linux @flatcar]

🚀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

[Flatcar Container Linux @flatcar]

📦 Package updates: Linux 6.12.91 (Alpha/Beta/Stable), Linux 6.6.141 (LTS), ca-certificates 3.124
🔒 Security maintenance release for the recently disclosed kernel LPEs Fragnesia (CVE-2026-46300) and ssh-keysign-pwn (CVE-2026-46333), plus the usual kernel CVE roll-up

[Flatcar Container Linux @flatcar]

📜 Releases in the usual place:
https://t.co/rZjTiO6NNA

[Flatcar Container Linux @flatcar]

🚨 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 Container Linux @flatcar]

🚀 Alpha 4694.0.0
⚙️ Beta 4628.1.1
🛡️ Stable 4593.2.1

Highlights:
• Linux 6.12.87
• Kernel security fixes
• EROFS tools for containerd
• OEM partition mount rework
• ARM64 QEMU/KVM VNC serial logging
• Updated firmware & CA certs

[Flatcar Container Linux @flatcar]

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 🔒

[Flatcar Container Linux @flatcar]

🕰️ LTS 4081.3.7: Linux 6.6.127 + kernel CVE fixes;
ca-certificates 3.122.
⚡ QEMU launcher enables HVF acceleration on arm64 Macs for faster
local testing.

Releases in the usual place
https://t.co/rZjTiO6NNA

[Flatcar Container Linux @flatcar]

🚀 Flatcar Container Linux releases across channels:
Alpha 4669.0.0 / Beta 4628.1.0 / Stable 4593.2.0 / LTS 4081.3.7.
🧩 Kernels: 6.12.81 (A/B/S) + 6.6.127 (LTS).
🔒 Security fixes + boot/initrd updates.

[Flatcar Container Linux @flatcar]

🧱 Stable 4593.2.0: Linux 6.12.81 + a big security rollup.
📦 Afterburn 5.10.0 + Ignition 2.24.0.
🛠️ Minimal first-stage initrd shrinks /boot footprint; partitions grow for long-term headroom.
🔐 OpenSSH follows upstream defaults (incl post-quantum KEX).

[Flatcar Container Linux @flatcar]

📝 Notes on HackMD: https://t.co/dnsjvTC8CZ

🎙️ Video/Voice Bridge: https://t.co/JVzLtS4x3j

Join us and start your contribution journey in Flatcar! 🐧

[Flatcar Container Linux @flatcar]

It's the last Friday of the month! 🛠️ Time for The Maintenance Mode.

[Flatcar Container Linux @flatcar]

Throughout the day, we target action items and work through them in order. We welcome contributors from the community to join in, collaborate, and help us make Flatcar better together. 🤝

[Flatcar Container Linux @flatcar]

🚀 We’re happy to announce a new platform for the Flatcar community - our 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 👉️ https://t.co/GOQyZgNdvj

[Flatcar Container Linux @flatcar]

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: https://t.co/rZjTiO6fY2

[Flatcar Container Linux @flatcar]

New Flatcar Alpha, Beta and Stable releases now available!
🔒 Security patches: recent OpenSSL vulnerabilities (https://t.co/hHZbTdSmFc)
📜 Release notes at the usual spot: https://t.co/rZjTiO6fY2
📜 To learn more about this kind of security releases: https://t.co/otjGV786tW