GHSA-cxfp-7pvr-95ff
containerd CRI plugin: Incorrect cgroup hierarchy assignment for containers running in usernamespaced Kubernetes pods.
Quick fix
GHSA-cxfp-7pvr-95ff — github.com/containerd/containerd/v2: upgrade to the fixed version with the command below.
go get github.com/containerd/containerd/v2@v2.0.5Details
# 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](https://github.com/containerd/project/blob/main/SECURITY.md).
# For more information If you have any questions or comments about this advisory:
* Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose) * Email us at security@containerd.io
To report a security issue in containerd: * [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new) * Email us at [security@containerd.io](mailto:security@containerd.io)
Are you affected?
Enter the version of the package you're using.
Affected packages
2.0.1Fixed in: 2.0.5go get github.com/containerd/containerd/v2@v2.0.5