If you are on GCP and don't have time to patch, GCP recommends turning off your port 22 for now. https://cloud.google.com/compute/docs/security-bulletins

1. Find things that are 0.0.0.0 port 22, example, https://gist.github.com/james-ransom/97e1c8596e28b9f759bac79...

2. Force them to the local network, gcloud compute firewall-rules update default-allow-ssh --source-ranges=10.0.0.0/8 --project=$i;