CVE-2025-4563 Affecting kubernetes package, versions <1.20.5+really1.20.2-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-DEBIAN13-KUBERNETES-10492135
  • published21 Jun 2025
  • disclosed23 Jun 2025

Introduced: 21 Jun 2025

NewCVE-2025-4563  (opens in a new tab)

How to fix?

Upgrade Debian:13 kubernetes to version 1.20.5+really1.20.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubernetes package and not the kubernetes package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

A vulnerability exists in the NodeRestriction admission controller where nodes can bypass dynamic resource allocation authorization checks. When the DynamicResourceAllocation feature gate is enabled, the controller properly validates resource claim statuses during pod status updates but fails to perform equivalent validation during pod creation. This allows a compromised node to create mirror pods that access unauthorized dynamic resources, potentially leading to privilege escalation.

CVSS Base Scores

version 3.1