Releases

AI-analyzed release notes for CNCF graduated and incubating projects.

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May 2026Clear ×

Flatcar Container Linuxstable-4593.2.2Provisioning & RuntimeMay 27, 2026

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Flatcar stable-4593.2.2 is a maintenance release with Linux security fixes. It also updates Linux to 6.12.91 and ca-certificates to 3.124.

Action needed (1)

securitycriticalLinux security fixes
Linux security fixes for CVE-2024-36476, CVE-2024-39282, CVE-2024-53681, CVE-2024-54031, CVE-2024-57795, CVE-2024-57801, CVE-2024-57802, CVE-2024-57841, CVE-2024-57844, CVE-2024-57857, CVE-2024-57882, CVE-2024-57883, CVE-2024-57884, CVE-2024-57885, CVE-2024-57886, CVE-2024-57887, CVE-2024-57888, CVE-2024-57889, CVE-2024-57890, CVE-2024-57891, CVE-2024-57892, CVE-2024-57893, CVE-2024-57894, CVE-2024-57895, CVE-2024-57896, CVE-2024-57897, CVE-2024-57898, CVE-2024-57899, CVE-2024-57900, CVE-2024-57901, CVE-2024-57902, CVE-2024-57903, CVE-2024-57930, CVE-2024-57931, CVE-2024-57932, CVE-2024-57933, CVE-2024-57934, CVE-2024-57935, CVE-2024-57936, CVE-2024-57937, CVE-2024-57938, CVE-2024-58237, CVE-2025-21629, CVE-2025-21630, CVE-2026-43490, CVE-2026-43492, CVE-2026-43495, CVE-2026-43496, CVE-2026-43497, CVE-2026-43502, CVE-2026-43503, CVE-2026-46300, and CVE-2026-46333 ship in Flatcar stable-4593.2.2.

Source ↗

Flatcar Container Linuxlts-4081.3.8Provisioning & RuntimeMay 27, 2026

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This Flatcar LTS release contains Linux security fixes identified by CVEs, plus ca-certificates and Linux component updates. It is most relevant to deployments tracking the lts-4081.3.8 release.

Action needed (1)

securitycriticalLinux security fixes for CVE-2026-43316
Linux receives security fixes associated with the listed CVEs, including CVE-2026-43316. The update ships in Flatcar LTS lts-4081.3.8.

Source ↗

Flatcar Container Linuxstable-4593.2.1Provisioning & RuntimeMay 11, 2026

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This is a security-focused Flatcar release with disclosed Linux security fixes. It also updates the Linux and ca-certificates dependencies.

Action needed (1)

securitycriticalLinux security updates, including CVE-2026-31733
Linux receives security updates in Flatcar stable-4593.2.1, including CVE-2026-31733 and the other disclosed Linux advisories listed for this change.

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metal3-iov0.13.0Provisioning & RuntimeMay 8, 2026

ACTION 1CHECK 3PLAN 1OTHER 40View full analysis

This release removes the iRMC driver and legacy vbmctl entrypoint, deprecates BMH.Spec.Firmware, and changes defaults and constraints. It also adds HostClaim and vbmctl capabilities, corrects bugs, and updates dependencies.

Action needed (1)

breakingManager TLS default set to unset
The manager TLS default is set back to unset in this release.

Check if affected (3)

breakingThe iRMC driver, removed
Applies if you use the iRMC driver.
breakingPreprovisioningImage required for deprovisioning
Applies if cleaning is enabled.
breakingThe legacy vbmctl entrypoint, removed
Applies if you use the legacy vbmctl entrypoint.

Plan ahead (1)

deprecatedThe BMH.Spec.Firmware field, deprecated
Applies if you configure BMH.Spec.Firmware.

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