7.5

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

Modified
AliasesRHSA-2024:0195GHSA-p4rx-7wvg-fwrcGO-2024-2458
Published 09-01-2024Last modified 20-11-2025

Vulnerability summary

CVE-2023-6476 is a high (CVSS 7.5) vulnerability in redhat openshift_container_platform. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 58.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.86%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2024:0207

Timeline

  1. 09-01-2024
    PublishedVulnerability first disclosed.
  2. 20-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.86% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat4 products
  • openshift_container_platform3.11 | 4.13 | 4.14
  • cri-o< 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el8 | < 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el9
  • cri-o-debuginfo< 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el8 | < 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el9
  • cri-o-debugsource< 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el8 | < 0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el9
Github.com/cri-o1 product
  • cri-o≥ 1.28.0, < 1.28.3 | < 1.27.3 | ≥ 1.29.0, < 1.29.1

2 vendors · 5 products

References

13 links
Show all 13 references