CVE-2025-47291

containerd CRI plugin: Incorrect cgroup hierarchy assignment for containers running in usernamespaced Kubernetes pods.

Description

containerd is an open-source container runtime. A bug was found in the containerd's CRI implementation where containerd, starting in version 2.0.1 and prior to version 2.0.5, doesn't put usernamespaced containers under the Kubernetes' cgroup hierarchy, therefore some Kubernetes limits are not honored. This may cause a denial of service of the Kubernetes node. This bug has been fixed in containerd 2.0.5+ and 2.1.0+. Users should update to these versions to resolve the issue. As a workaround, disable usernamespaced pods in Kubernetes temporarily.

Category

4.6
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.02%
Affected: containerd containerd
Published at:
Updated at:

References

Link Tags
https://github.com/containerd/containerd/security/advisories/GHSA-cxfp-7pvr-95ff

Frequently Asked Questions

What is the severity of CVE-2025-47291?
CVE-2025-47291 has been scored as a medium severity vulnerability.
How to fix CVE-2025-47291?
To fix CVE-2025-47291, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-47291 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-47291 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-47291?
CVE-2025-47291 affects containerd containerd.
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