CVE-2026-47262

A flaw was found in containerd, an open-source container runtime. A remote attacker could exploit this vulnerability by providing a maliciously crafted image. When a container is created from this image, it leads to uncontrolled resource consumption and memory exhaustion, causing the containerd process to terminate. This results in a Denial of Service (DoS) condition, making the container runtime API unavailable and disrupting clients like Docker Engine or Kubernetes.

Red Hat's container platform uses CRI-O as its container runtime interface, not containerd. While containerd libraries are bundled in some images for OCI image operations (e.g., estargz support via skopeo), the containerd daemon and its CRI plugin (where the vulnerable group-parsing code path exists) are not executed. Therefore, this vulnerability is not exploitable in Red Hat products.

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.

No mitigation is needed for Red Hat products. The vulnerable code path in containerd's CRI plugin group-parsing logic is not executed because Red Hat uses CRI-O as the container runtime. Products that bundle containerd as a library dependency for OCI image operations are not affected.