Impact question on AWS: From https://aws.amazon.com/de/security/security-bulletins/AWS-2018-013/ https://aws.amazon.com/de/security/security-bulletins/AWS-20..

Impact question on AWS: From https://aws.amazon.com/de/security/security-bulletins/AWS-2018-013/ https://aws.amazon.com/de/security/security-bulletins/AWS-20...: "While the updates AWS performs protect underlying infrastructure, in order to be fully protected against these issues, customers must also patch their instance operating systems." Prior to this quote, Amazon said that virtually all of the underlying instances have been patched. What's the risk between now and when all of my EC2 instances are restarted with updated AMIs? Is it the 'full' risk, or is the attack less feasible, given the patched underlying OS'. Thanks.