linux-kernel - Re: [PATCH 0/10] Add additional security checks when module loading is restricted

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 for Android: free password hash cracker in your pocket

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

Date:	Wed, 28 Aug 2013 22:41:55 +0000
From:	Matthew Garrett <matthew.garrett@...ula.com>
To:	Lenny Szubowicz <lszubowi@...hat.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"jwboyer@...hat.com" <jwboyer@...hat.com>,
	"keescook@...omium.org" <keescook@...omium.org>
Subject: Re: [PATCH 0/10] Add additional security checks when module loading
 is restricted

On Wed, 2013-08-28 at 18:37 -0400, Lenny Szubowicz wrote:

> Did you purposely exclude similar checks for hibernate that were covered
> by earlier versions of your patch set?

Yes, I think it's worth tying it in with the encrypted hibernation
support. The local attack is significantly harder in the hibernation
case - in the face of unknown hardware it basically involves a
pre-generated memory image corresponding to your system or the ability
to force a reboot into an untrusted environment. I think it's probably
more workable to just add a configuration option for forcing encrypted
hibernation when secure boot is in use.

-- 
Matthew Garrett <matthew.garrett@...ula.com>