CVE-2023-6476 MEDIUM

CVE-2023-6476: Cri-o: pods are able to break out of resource confinement on cgroupv2

Vendor Red Hat
Product Red Hat OpenShift Container Platform 3.11
Weakness CWE-770 · Uncontrolled resource consumption
Published January 9, 2024
Last update November 20, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

A flaw was found in CRI-O that involves an experimental annotation leading to a container being unconfined. This may allow a pod to specify and get any amount of memory/cpu, circumventing the kubernetes scheduler and potentially resulting in a denial of service in the node.

Key dates

02Disclosure timeline

January 9, 2024 CVE published
November 20, 2025 Record updated