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From: Akemi Yagi <toracat@elrepo.org>
Date: Mon, 15 Jan 2018 17:05:45 -0800
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Subject: Re: Reg : Spectre & Meltdown
To: David Lang <david@lang.hm>
Cc: linux-kernel@vger.kernel.org
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On Mon, Jan 15, 2018 at 4:50 PM, David Lang <david@lang.hm> wrote:
> the 4.4.112 patches that Greg just posted include a bunch of work for these
> vulnerabilities.
>
> Who knows what has been backported to the kernel he is running.
> k

In RHEL (therefore CentOS), microcode comes from the microcode_ctl
package which is currently at 2.1-22.2.el7. If you get the latest from
Intel ( https://downloadcenter.intel.com/download/27431/Linux-Processor-Microcode-Data-File
), that will update the microcode on your system to "date =
2017-11-20". As far as I can see, that changes the test result of
'Spectre Variant 2' from vuln to Not vuln.

Akemi