My system is 7.2.1511.
When I run “yum update”, it wants to install about
900 packages total. Most are labeled just “el7”. A few “el7_1” and a lot are “el7_3” or 7.3. None are 7.2.
I’m not surprised when I see 50-100 packages needing an update. But 900? And none specific to the installed system?
My last update, of 4 packages, was Dec 31, 2016. I first noted the current behavior about 10 days later and have been trying to figure out why such an unusual report.