CVE-2026-53493 Containerd has image-pull DoS via crafted OCI index graph amplification

containerd is an open-source container runtime. Prior to versions 1.7.36, 2.0.13, 2.2.9, 2.3.6, and 2.4.1, a crafted OCI index graph can force very high CPU/memory usage during PullImage before container start, causing long ContainerCreating stalls and, at larger sizes, node/runtime instability...