John Deardurff puts together a list:
Here is a roundup of recent security updates for SQL Server from the SQL Server Blog announcements.
Read on for links to recent security updates, as well as end of support dates for SQL Server versions 2016 and 2019. John forgot to include 2017 in there, but we’ve still got another year of extended support for that one.
John also clarifies the difference between the CU and GDR paths for SQL Server and when you might choose one versus the other.