From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
Cc: Thomas Renninger <trenn-l3A5Bk7waGM@public.gmane.org>,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
jlee-IBi9RG/b67k@public.gmane.org
Subject: Re: Do not allow MSR or Embedded Controller writes from userspace in secure boot case
Date: Wed, 07 Nov 2012 23:50:35 +0100 [thread overview]
Message-ID: <509AE5BB.7060908@zytor.com> (raw)
In-Reply-To: <20121107215403.GA7277-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
On 11/07/2012 10:54 PM, Matthew Garrett wrote:
> Is there a case where modifying MSRs or EC registers can cause arbitrary
> code execution?
It definitely can't be ruled out.
-hpa
next prev parent reply other threads:[~2012-11-07 22:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-07 21:28 Do not allow MSR or Embedded Controller writes from userspace in secure boot case Thomas Renninger
[not found] ` <1352323699-52400-1-git-send-email-trenn-l3A5Bk7waGM@public.gmane.org>
2012-11-07 21:28 ` [PATCH 1/2] ACPI ec_sys: Do not allow write access to EC in secure boot mode Thomas Renninger
2012-11-07 21:28 ` [PATCH 2/2] X86 msr: Do not allow MSR writes " Thomas Renninger
2012-11-07 21:54 ` Do not allow MSR or Embedded Controller writes from userspace in secure boot case Matthew Garrett
[not found] ` <20121107215403.GA7277-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2012-11-07 22:50 ` H. Peter Anvin [this message]
2012-11-07 22:51 ` H. Peter Anvin
[not found] ` <509AE5DA.1030508-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2012-11-07 23:21 ` Alan Cox
2012-11-08 14:38 ` Thomas Renninger
[not found] ` <201211081538.34091.trenn-l3A5Bk7waGM@public.gmane.org>
2012-11-08 14:41 ` Matthew Garrett
[not found] ` <20121108144125.GC24094-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2012-11-08 14:44 ` Shea Levy
[not found] ` <509BC53B.5070304-yfkUTty7RcRWk0Htik3J/w@public.gmane.org>
2012-11-08 14:47 ` Matthew Garrett
2012-11-09 12:35 ` H. Peter Anvin
2012-11-08 9:40 ` Thomas Renninger
[not found] ` <201211081040.33981.trenn-l3A5Bk7waGM@public.gmane.org>
2012-11-08 14:39 ` Matthew Garrett
[not found] ` <20121108143919.GB24094-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2012-11-08 16:43 ` Alan Cox
2012-11-07 23:27 ` Alan Cox
[not found] ` <20121107232722.67589868-38n7/U1jhRXW96NNrWNlrekiAK3p4hvP@public.gmane.org>
2012-11-08 14:19 ` [RFC] [PATCH] X86 MSR read whitelist Thomas Renninger
[not found] ` <201211081519.23364.trenn-l3A5Bk7waGM@public.gmane.org>
2012-11-08 15:36 ` Alan Cox
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