CVE-2026-53495 containerd CRI ExecSync Goroutine Leak Leading to Node-Level Denial of Service

containerd is an open-source container runtime. Prior to 1.7.35, 2.0.12, 2.2.8, and 2.3.5, containerd on Linux with the CRI plugin enabled can indefinitely block the drainExecSyncIO goroutine in internal/cri/server/containerexecsync.go when CRI ExecSync is used by exec probes or lifecycle hooks...