The updated ucode needs to be delivered for Broadwell EP/EX CPU models to mitigate Spectre vulnerability.
Broadwell EP/EX CPUs need updated microcode update sequence so this is blocker by bz1574579.
Note: with microcode_ctl-2.1-45.el7, BDW EP/EX microcode is included, but is disabled by default due to reports of system hangs even with the updated kernels .
Verification steps were performed in a separate bugzilla which supersedes this one: https://bugzilla.redhat.com/show_bug.cgi?id=1614422#c9
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.