CVE-2023-6476

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

State: Published
Severity: 6.5 Medium
Published: Jan 9, 2024
Updated: Nov 20, 2025
Reserved: Dec 4, 2023

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
Red Hat OpenShift Container Platform 4.13Red Hat	0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el9 and laterNot affected
Red Hat OpenShift Container Platform 4.14Red Hat	0:1.27.2-7.rhaos4.14.git1cc7a64.el9 and laterNot affected
Red Hat OpenShift Container Platform 3.11Red Hat

References

RHSA-2024:0195vendor-advisory
RHSA-2024:0207vendor-advisory
https://access.redhat.com/security/cve/CVE-2023-6476vdb-entry
RHBZ#2253994issue-tracking

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