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From: Russell Coker <russell@coker.com.au>
To: Eric Paris <eparis@redhat.com>
Cc: linux-kernel@vger.kernel.org, selinux@tycho.nsa.gov,
	Alan Cox <alan@redhat.com>,
	drepper@redhat.com, roland@redhat.com, arjan@infradead.org,
	mingo@elte.hu, viro@zeniv.linux.org.uk, jmorris@namei.org,
	chrisw@redhat.com, sds@tycho.nsa.gov, sgrubb@redhat.com
Subject: Re: [PATCH] Protection for exploiting null dereference using mmap
Date: Wed, 6 Jun 2007 19:01:59 +1000	[thread overview]
Message-ID: <200706061902.05786.russell@coker.com.au> (raw)
In-Reply-To: <1181075666.3978.31.camel@localhost.localdomain>

On Wednesday 06 June 2007 06:34, Eric Paris <eparis@redhat.com> wrote:
> This patch uses a new SELinux security class "memprotect."  Policy
> already contains a number of allow rules like  a_t self:process *
> (unconfined_t being one of them) which mean that putting this check in
> the process class (its best current fit) would make it useless as all

I think it would be best to use the process class and change the "*" rules to 
~{ memprotect }.

-- 
russell@coker.com.au
http://etbe.coker.com.au/          My Blog

http://www.coker.com.au/sponsorship.html Sponsoring Free Software development

  parent reply	other threads:[~2007-06-06 10:23 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1180561713.3633.27.camel@dhcp231-215.rdu.redhat.com>
     [not found] ` <20070603205653.GE25869@devserv.devel.redhat.com>
     [not found]   ` <1180964306.14220.34.camel@moss-spartans.epoch.ncsc.mil>
2007-06-05 20:34     ` Eric Paris
2007-06-05 21:00       ` James Morris
2007-06-05 21:16         ` Alan Cox
2007-06-05 21:28           ` Eric Paris
2007-06-05 22:46             ` H. Peter Anvin
2007-06-07 14:28               ` Pavel Machek
2007-06-06 12:47             ` Stephen Smalley
2007-06-07 16:58               ` Jan Engelhardt
2007-06-06  6:30           ` Eric Paris
2007-06-06 13:21             ` James Morris
2007-06-06 17:30             ` Stephen Smalley
2007-06-06 18:01               ` James Morris
2007-06-06 18:06             ` Chris Wright
2007-06-20 19:48             ` Adam Jackson
2007-06-05 22:49       ` Chris Wright
2007-06-05 22:53       ` Chris Wright
2007-06-06 12:12         ` Stephen Smalley
2007-06-06  9:01       ` Russell Coker [this message]
2007-06-06 12:18         ` Stephen Smalley

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