linux-kernel - Re: [PATCH] intel_txt: add s3 userspace memory integrity verification

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4B19912B.8050009@zytor.com>
Date:	Fri, 04 Dec 2009 14:46:03 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Pavel Machek <pavel@....cz>
CC:	"Cihula, Joseph" <joseph.cihula@...el.com>,
	"Wang, Shane" <shane.wang@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"chrisw@...s-sol.org" <chrisw@...s-sol.org>,
	"jmorris@...ei.org" <jmorris@...ei.org>,
	"jbeulich@...ell.com" <jbeulich@...ell.com>,
	"peterm@...hat.com" <peterm@...hat.com>
Subject: Re: [PATCH] intel_txt: add s3 userspace memory integrity verification

On 12/04/2009 02:39 PM, Pavel Machek wrote:
> 
> Having "security" technology that silently fails with funny bootloader
> is pretty bad, I'd say.
> 

Yes, but this wouldn't be a silent failure -- such a boot loader
wouldn't be able to boot tboot itself either, nor would be able to boot
32-bit kernels (which, in fact, not all boot loaders can); the tboot
boot process in fact in many ways treats tboot itself as a 32-bit
primary kernel, with the Linux kernel as a secondary kernel.

So, this particular failure would not be silent by any means.

	-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/