Containerd Vulnerability in Kubernetes Implementation by Docker
CVE-2025-47291

4.6MEDIUM

Key Information:

Vendor

Containerd

Status
Containerd
Vendor
CVE Published:
21 May 2025

What is CVE-2025-47291?

A flaw in containerd's CRI implementation has been identified, causing usernamespaced containers to not be placed under the Kubernetes cgroup hierarchy. This oversight results in certain Kubernetes limits not being enforced, potentially leading to a denial of service for the Kubernetes node. To mitigate this issue, users are advised to update to containerd versions 2.0.5 or later, or 2.1.0 and above. Alternatively, temporarily disabling usernamespaced pods in Kubernetes can be employed as a workaround until the update is applied.

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Deploy the Patch

Affected Version(s)

containerd >= 2.0.1, < 2.0.5

References

https://github.com/containerd/containerd/security/advisor...
x_refsource_CONFIRM

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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