---
# System prepended metadata

title: Flatcar Container Linux Release - Februrary 18th 2025

---

# Flatcar Container Linux Release - February 18th, 2025

## Alpha 4230.0.1
- AMD64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: EM
- ARM64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: EM

## Beta 4186.1.1
- AMD64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: EM
- ARM64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: EM

## Stable 4152.2.1
- AMD64-usr
    - Platforms succeeded: All 
    - Platforms failed: None
    - Platforms not tested: None
- ARM64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: None

## LTS 4081.3.1
- AMD64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: None
- ARM64-usr
    - Platforms succeeded: All
    - Platforms failed: None
    - Platforms not tested: None

VERDICT: _GO_ 

#### Notes:

- Capacity issues was noticed in Hetzner, Openstack

## Communication

---

#### Guidelines / Things to Remember

- Release notes are used in a PR and will appear on https://www.flatcar.org/releases/
- [Announcement Message](#Announcement-Message) is posted in [Flatcar-Linux-user](https://groups.google.com/g/flatcar-linux-user).  Make sure to post as “Flatcar Container Linux User”, not with your personal user (this can be selected when drafting the post).
- Make sure the the LTS is referred to as `LTS-2021`, and not `LTS-2605`
---

### Announcement Message

Subject: Announcing new releases Alpha 4230.0.1, Beta 4186.1.1, Stable 4152.2.1, LTS 4081.3.1


Hello,

We are pleased to announce a new Flatcar Container Linux maintenance release for the Alpha, Beta, Stable and LTS-2024 channel. The releases backports the patches to fix the OpenSSH CVEs: [CVE-2025-26465](https://nvd.nist.gov/vuln/detail/CVE-2025-26465), [CVE-2025-26466](https://nvd.nist.gov/vuln/detail/CVE-2025-26466)


### New Alpha Release 4230.0.1

_Changes since **Alpha 4230.0.0**_
 
 #### Security fixes:
 - openssh ([CVE-2025-26465](https://nvd.nist.gov/vuln/detail/CVE-2025-26465), [CVE-2025-26466](https://nvd.nist.gov/vuln/detail/CVE-2025-26466))
 
 #### Updates:
 - openssh(9.8_p1-r4)

### New Beta Release 4186.1.1

_Changes since **Beta 4186.1.0**_

 #### Security fixes:
 - openssh ([CVE-2025-26465](https://nvd.nist.gov/vuln/detail/CVE-2025-26465), [CVE-2025-26466](https://nvd.nist.gov/vuln/detail/CVE-2025-26466))
 
 #### Updates:
 - openssh(9.8_p1-r4)


### New Stable Release 4152.2.1

_Changes since **Stable 4152.2.0**_

 #### Security fixes:
 - openssh ([CVE-2025-26465](https://nvd.nist.gov/vuln/detail/CVE-2025-26465), [CVE-2025-26466](https://nvd.nist.gov/vuln/detail/CVE-2025-26466))
 
 #### Updates:
 - openssh(9.8_p1-r4)


### New LTS Release 4081.3.1

_Changes since **LTS 4081.3.0**_

 #### Security fixes:
 - openssh ([CVE-2025-26465](https://nvd.nist.gov/vuln/detail/CVE-2025-26465), [CVE-2025-26466](https://nvd.nist.gov/vuln/detail/CVE-2025-26466))
 
 #### Updates:
 - openssh(9.8_p1-r4)



Best,
The Flatcar Container Linux Maintainers

---

### Communication

#### Go/No-Go message for Matrix/Slack

Go/No-Go Meeting for Alpha 4230.0.1, Beta 4186.1.1, Stable 4152.2.1, LTS 4081.3.1
Pre-view images are available in https://bincache.flatcar-linux.net/images/amd64/$VERSION/
Tracking issue: https://github.com/flatcar/Flatcar/issues/1655
The Go/No-Go document is in our HackMD @flatcar namespace
Link: https://hackmd.io/P063YH3jRsWxPOaFA7Zk-w

Please give your Go/No-Go vote with 💚 for Go, ❌ for No-Go, and ✋ for Wait.

Contributors & community feel free to put your suggestions, thoughts or comments on the document or here in the chat.

@MAINTAINER @MAINTAINER @MAINTAINER

#### Mastodon

_The toot (from [@flatcar](https://hachyderm.io/@flatcar)) goes out after the changelog update has been published; it includes a link to the web changelog._

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: https://www.flatcar.org/releases/ 

#### Kubernetes Slack

_This goes in the #flatcar channel_

Please welcome Flatcar releases of this month:
- Alpha 4230.0.1 (maintenance release)
- Beta 4186.1.1 (maintenance release)
- Stable 4152.2.1 (maintenance release)
- LTS 4081.3.1 (maintenance release)

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: https://www.flatcar.org/releases/ 

