Cri-o: pods are able to break out of resource confinement on cgroupv2

CVE-2023-6476

What is CVE-2023-6476?

A critical flaw exists in the CRI-O runtime, which is related to experimental annotations that can lead to a container running in an unconfined state. This vulnerability allows a pod to gain control over memory and CPU resources beyond standard limits, effectively bypassing the Kubernetes scheduler's resource management. The repercussions of this vulnerability could include a denial of service on the affected node, as it can lead to resource exhaustion and instability. Monitoring and patching affected versions are essential to mitigate risks associated with this vulnerability.

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