CVE-2025-4563

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.

References

Affected packages

Debian:11 / kubernetes

Package

Name: kubernetes
Purl: pkg:deb/debian/kubernetes?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.5+really1.20.2-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / kubernetes

Package

Name: kubernetes
Purl: pkg:deb/debian/kubernetes?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.5+really1.20.2-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / kubernetes

Package

Name: kubernetes
Purl: pkg:deb/debian/kubernetes?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.20.5+really1.20.2-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}