CVE-2026-53492

A flaw was found in containerd, an open-source container runtime. The Container Runtime Interface (CRI) implementation, which allows Kubernetes to interact with container runtimes, improperly trusts Container Device Interface (CDI) annotations found within untrusted checkpoint image metadata during container restoration. This vulnerability enables a user with permissions to create pods to bypass standard Kubernetes resource allocation and device plugin enforcement. Consequently, an attacker can inject arbitrary CDI edits, such as device nodes and host mounts, into the restored container, potentially leading to unauthorized resource access or privilege escalation.

This flaw is rated as Important. In Red Hat OpenShift Container Platform, a user with pod creation permissions could bypass standard Kubernetes resource allocation and device plugin enforcement. This is due to containerd's Container Runtime Interface (CRI) improperly trusting Container Device Interface (CDI) annotations during container restoration. Exploitation requires CDI to be enabled on the node and a matching host CDI specification for the requested device.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.