Cri-o: pods are able to break out of resource confinement on cgroupv2
Priority LOW 34CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00859 58th percentileScored 2026-11-07
Fix Partial github.com/cri-o/cri-o (Go): 1.29.1, 1.28.3, 1.27.3Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat OpenShift Container Platform 4.13 | — | 1.26.4-6.1.rhaos4.13.git9eb9cf3.el9 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.14 | — | 1.27.2-7.rhaos4.14.git1cc7a64.el9 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 3.11 | — | — | No fix listed | CNA |
| — | github.com/cri-o/cri-o (Go) | 1.29.0 to before 1.29.1 | 1.29.1 | Patch available | GHSA-p4rx-7wvg-fwrc |
| — | github.com/cri-o/cri-o (Go) | 1.28.0 to before 1.28.3 | 1.28.3 | Patch available | GHSA-p4rx-7wvg-fwrc |
| — | github.com/cri-o/cri-o (Go) | before 1.27.3 | 1.27.3 | Patch available | GHSA-p4rx-7wvg-fwrc |
- Red Hat OpenShift Container Platform 4.13 VendorRed Hat Affected — Fixed in 1.26.4-6.1.rhaos4.13.git9eb9cf3.el9 Patch available CNA
- Red Hat OpenShift Container Platform 4.14 VendorRed Hat Affected — Fixed in 1.27.2-7.rhaos4.14.git1cc7a64.el9 Patch available CNA
- Red Hat OpenShift Container Platform 3.11 VendorRed Hat Affected — Fixed in — No fix listed CNA
- github.com/cri-o/cri-o (Go) Vendor— Affected 1.29.0 to before 1.29.1 Fixed in 1.29.1 Patch available GHSA-p4rx-7wvg-fwrc
- github.com/cri-o/cri-o (Go) Vendor— Affected 1.28.0 to before 1.28.3 Fixed in 1.28.3 Patch available GHSA-p4rx-7wvg-fwrc
- github.com/cri-o/cri-o (Go) Vendor— Affected before 1.27.3 Fixed in 1.27.3 Patch available GHSA-p4rx-7wvg-fwrc
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:* | 3.11 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openshift_container_platform:4.13:*:*:*:*:*:*:* | 4.13 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openshift_container_platform:4.14:*:*:*:*:*:*:* | 4.14 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Running on | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Running on | Red Hat |
- cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:* Versions 3.11 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openshift_container_platform:4.13:*:*:*:*:*:*:* Versions 4.13 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openshift_container_platform:4.14:*:*:*:*:*:*:* Versions 4.14 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Running on ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Running on ·Red Hat
Remediation
- Fix · GHSA-p4rx-7wvg-fwrc github.com/cri-o/cri-o (Go) Fixed in 1.29.1 Advisory →
- Fix · GHSA-p4rx-7wvg-fwrc github.com/cri-o/cri-o (Go) Fixed in 1.28.3 Advisory →
- Fix · GHSA-p4rx-7wvg-fwrc github.com/cri-o/cri-o (Go) Fixed in 1.27.3 Advisory →
Red Hat 2 advisories
- RHSA-2024:0195 Released 2024-01-17 · Red Hat rating ModerateOpenShift Container Platform 4.13.29 packages and security update
- Red Hat OpenShift Container Platform 4.13 cri-o-1.26.4-6.1.rhaos4.13.git9eb9cf3.el8, cri-o-1.26.4-6.1.rhaos4.13.git9eb9cf3.el9
- RHSA-2024:0207 Released 2024-01-17 · Red Hat rating ModerateOpenShift Container Platform 4.14.9 packages and security update
- Red Hat OpenShift Container Platform 4.14 cri-o-1.27.2-7.rhaos4.14.git1cc7a64.el8, cri-o-1.27.2-7.rhaos4.14.git1cc7a64.el9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 4.13 | Fixed | RHSA-2024:0195 |
| Red Hat OpenShift Container Platform 4.14 | Fixed | RHSA-2024:0207 |
Not affected: 2 products
- Red Hat OpenShift Container Platform 4.13
- Red Hat OpenShift Container Platform 4.14
Timeline
- 2026-10-02 Threatist record created from CVE-2023-6476
- 2026-10-03 Alias added: GHSA-p4rx-7wvg-fwrc
References
Advisory 5
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- TI-2026-34021 Linux kernel skb coalescing drops shared-frag marker KEVCVSS 3.1HIGH 7.8
- TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2023-6476 · CVE Program
- CVE-2023-6476 · NVD
- FIRST EPSS
- GHSA-p4rx-7wvg-fwrc · GitHub Advisory Database · CC BY 4.0
- CVE-2023-6476 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences