No they have run benchmarks for various types of loads ranging from CPU intensive to I/O intensive. Guess why it's important to this forum? The database benchmarks with the heavy I/O load suffered the most...
(Microsoft and core Linux developers have been working on patches for at least a few weeks if not longer...)

And the security aspect of this is critical enough that Microsoft started mass patching and rebooting Azure VMs last night.

I heard something was up over a week ago since I follow security, Microsoft OS and Linux development, I think most of the SQL Server Blog-O-Sphere was/is either on holiday or waiting for more details.