Re: Intel hyper-threading security issues

[Georgi Guninski <guninski () guninski com>]

On Wed, Jun 20, 2018 at 12:48:55AM +0400, Loganaden Velvindron wrote:
> Hi all,
>
> OpenBSD has gone ahead and disabled Intel Hyper threading with a
> fairly detailed comment about the reasons behind:
>
> https://www.mail-archive.com/source-changes () openbsd org/msg99141.html

Freebsd:

https://www.freebsd.org/security/advisories/FreeBSD-SA-05:09.htt.asc
Topic:          information disclosure when using HTT
Announced:      2005-05-13
When running on processors supporting Hyper-Threading Technology, it is
possible for a malicious thread to monitor the execution of another
thread.
V.   Solution

Disable Hyper-Threading Technology on processors that support it.