GHSA-CXFP-7PVR-95FF

Vulnerability from github – Published: 2025-05-21 18:01 – Updated: 2025-05-28 19:45
VLAI?
Summary
containerd CRI plugin: Incorrect cgroup hierarchy assignment for containers running in usernamespaced Kubernetes pods.
Details

Impact

A bug was found in the containerd's CRI implementation where containerd 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.

Patches

This bug has been fixed in containerd 2.0.5+ and 2.1.0+. Users should update to these versions to resolve the issue.

Workarounds

Disable usernamespaced pods in Kubernetes temporarily.

Credits

The containerd project would like to thank Rodrigo Campos Catelin and Piotr Rogowski for responsibly disclosing this issue in accordance with the containerd security policy.

For more information

If you have any questions or comments about this advisory:

  • Open an issue in containerd
  • Email us at security@containerd.io

To report a security issue in containerd: * Report a new vulnerability * Email us at security@containerd.io

Severity ?
4.6 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.0.4"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/containerd/containerd/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.1"
            },
            {
              "fixed": "2.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47291"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-266"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-21T18:01:48Z",
    "nvd_published_at": "2025-05-21T18:15:52Z",
    "severity": "MODERATE"
  },
  "details": "# Impact\n\nA bug was found in the containerd\u0027s CRI implementation where containerd doesn\u0027t put usernamespaced containers under the Kubernetes\u0027 cgroup hierarchy, therefore some Kubernetes limits are not honored. This may cause a denial of service of the Kubernetes node.\n\n# Patches\n\nThis bug has been fixed in containerd 2.0.5+ and 2.1.0+. Users should update to these versions to resolve the issue.\n\n# Workarounds\n\nDisable usernamespaced pods in Kubernetes temporarily.\n\n# Credits\n\nThe containerd project would like to thank Rodrigo Campos Catelin and Piotr Rogowski for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md).\n\n#  For more information\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose)\n* Email us at security@containerd.io\n\nTo report a security issue in containerd:\n* [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new)\n* Email us at [security@containerd.io](mailto:security@containerd.io)",
  "id": "GHSA-cxfp-7pvr-95ff",
  "modified": "2025-05-28T19:45:21Z",
  "published": "2025-05-21T18:01:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/containerd/containerd/security/advisories/GHSA-cxfp-7pvr-95ff"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47291"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/containerd/containerd"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2025-3701"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "containerd CRI plugin: Incorrect cgroup hierarchy assignment for containers running in usernamespaced Kubernetes pods."
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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