Nodes can bypass dynamic resource allocation authorization checks
CVE-2025-4563 is fixed in kubernetes on 1 platform, first by DEBIAN-CVE-2025-4563, released June 23, 2025. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kubernetes · Debian 12.15 (bookworm) | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2025-4563 | Jun 23, 2025 |
| kubernetes · Debian 13.5 (trixie) | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2025-4563 | Jun 23, 2025 |
| kubernetes · Debian 14 | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2025-4563 | Jun 23, 2025 |
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