This is the May 2021 release for .NET 5. Release Notes are here: https://github.com/dotnet/core/blob/main/release-notes/5.0/5.0.6/5.0.6.md.
This includes a fix for CVE-2021-31204: NET Core Elevation of Privilege Vulnerability
Please note this additional change needed to benefit from the CVE fix:
Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.
5.0.6-1.fc325.0.6-1.fc325.0.203-1.fc325.0.6-1.fc325.0.6-1.fc325.0.6-1.fc325.0.6-1.fc325.0.6-1.fc325.0.6-1.fc325.0.6-1.fc32