How to check cpu processors vulnerability details for the CVE-2017-5715, CVE-2017-5753, and CVE-2017-5754 in Bigfix console.
If you are using Windows you can look at Microsoft PowerShell content for Meltdown and Spectre - UPDATED to 1.0.4
There is a very long ongoing thread about this in general here: January Intel Meltdown Patches