NULL Pointer Dereference Affecting github.com/kubernetes-csi/external-snapshotter/pkg/common-controller Open this link in a new tab package, versions >=3.0.0 <3.0.2
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24 Nov 2020
3 Nov 2020
How to fix?
github.com/kubernetes-csi/external-snapshotter/pkg/common-controller to version 3.0.2 or higher.
github.com/kubernetes-csi/external-snapshotter/pkg/common-controller is a CSI snapshotter that is part of Kubernetes implementation of Container Storage Interface (CSI).
Affected versions of this package are vulnerable to NULL Pointer Dereference. The snapshot-controller could panic when processing a VolumeSnapshot custom resource when:
- The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass.
- The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop.