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.

The version of containerd2 installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-47291 advisory.

  - 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. (CVE-2025-47291)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2025-47291)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2025-47291)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Containerd on the remote host is 2.0.1 prior to 2.0.5. It is, therefore, affected by a vulnerability. 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.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
295982	Azure Linux 3.0 Security Update: containerd2 (CVE-2025-47291)	Nessus	Azure Linux Local Security Checks	medium
277007	openSUSE 16 Security Update : trivy (openSUSE-SU-2025-20117-1)	Nessus	SuSE Local Security Checks	medium
434328	SCA: security update for github.com/containerd/containerd/v2 (GHSA-cxfp-7pvr-95ff)	Tenable Cloud Security	SCA Checks	medium
434328	SCA: security update for github.com/containerd/containerd/v2 (GHSA-cxfp-7pvr-95ff)	Tenable Self-Hosted Container Security	SCA Checks	medium
251249	Linux Distros Unpatched Vulnerability : CVE-2025-47291	Nessus	Misc.	medium
237290	Containerd 2.0.1 < 2.0.5, 2.1.0 DoS	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-47291

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium