Intel Fail: OpenBSD disables Intel HyperThreading, Lazy FP State Restore

Georgi Guninski guninski at guninski.com
Wed Jun 20 22:02:49 PDT 2018


On Wed, Jun 20, 2018 at 07:44:21PM -0400, grarpamp wrote:
> https://www.mail-archive.com/source-changes@openbsd.org/msg99141.html
> https://www.intel.com/content/www/us/en/security-center/default.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.
 


More information about the cypherpunks mailing list