From: Andi Kleen <ak@suse.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: torvalds@osdl.org, linux-kernel@vger.kernel.org, akpm@osdl.org,
arjanv@redhat.com, suresh.b.siddha@intel.com,
jun.nakajima@intel.com
Subject: Re: [announce] [patch] NX (No eXecute) support for x86, 2.6.7-rc2-bk2
Date: Thu, 3 Jun 2004 17:54:22 +0200 [thread overview]
Message-ID: <20040603175422.4378d901.ak@suse.de> (raw)
In-Reply-To: <20040603124448.GA28775@elte.hu>
On Thu, 3 Jun 2004 14:44:48 +0200
Ingo Molnar <mingo@elte.hu> wrote:
> - in exec.c, since address-space executability is a security-relevant
> item, we must clear the personality when we exec a setuid binary. I
> believe this is also a (small) security robustness fix for current
> 64-bit architectures.
I'm not sure I like that. This means I cannot earily force an i386 uname
or 3GB address space on suid programs anymore on x86-64.
While in theory it could be a small security problem I think the utility
is much greater.
It's hard to see how setting NX could cause a security hole. The program
may crash, but it is unlikely to be exploitable.
-Andi
next prev parent reply other threads:[~2004-06-03 15:58 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-02 20:50 [announce] [patch] NX (No eXecute) support for x86, 2.6.7-rc2-bk2 Ingo Molnar
2004-06-02 21:00 ` Christoph Hellwig
2004-06-02 21:07 ` Ingo Molnar
2004-06-02 21:13 ` Linus Torvalds
2004-06-02 21:17 ` Arjan van de Ven
2004-06-02 21:31 ` Doug McNaught
2004-06-08 8:46 ` Jakub Jelinek
2004-06-03 1:12 ` Joel Becker
2004-06-03 1:27 ` Andi Kleen
2004-06-03 6:24 ` Arjan van de Ven
2004-06-03 20:37 ` jlnance
2004-06-03 7:21 ` Ingo Molnar
2004-06-03 12:44 ` Ingo Molnar
2004-06-03 15:54 ` Andi Kleen [this message]
2004-06-03 23:01 ` Andy Lutomirski
2004-06-03 23:08 ` Andi Kleen
2004-06-03 23:54 ` Andy Lutomirski
2004-06-04 0:05 ` Andy Lutomirski
2004-06-04 9:25 ` Ingo Molnar
2004-06-04 15:26 ` Andy Lutomirski
2004-06-04 15:36 ` Linus Torvalds
2004-06-04 15:41 ` Arjan van de Ven
2004-06-04 15:47 ` Linus Torvalds
2004-06-04 15:51 ` Arjan van de Ven
2004-06-04 16:02 ` Linus Torvalds
2004-06-04 16:13 ` Andi Kleen
2004-06-04 16:37 ` Arjan van de Ven
2004-06-04 16:40 ` Christoph Hellwig
2004-06-04 17:27 ` David Mosberger
2004-06-04 17:30 ` Andi Kleen
2004-06-08 9:07 ` Jakub Jelinek
2004-06-08 9:14 ` Andi Kleen
2004-06-08 9:19 ` Arjan van de Ven
2004-06-04 16:51 ` Ulrich Drepper
2004-06-08 17:15 ` Bill Davidsen
2004-06-04 18:11 ` Gerhard Mack
2004-06-04 18:12 ` Arjan van de Ven
2004-06-04 16:06 ` Ingo Molnar
2004-06-04 17:20 ` Ingo Molnar
2004-06-04 17:22 ` Ingo Molnar
2004-06-04 17:32 ` Ingo Molnar
2004-06-03 19:24 ` Suresh Siddha
2004-06-03 20:37 ` Andi Kleen
2004-06-03 22:58 ` Suresh Siddha
2004-06-03 23:06 ` Andi Kleen
2004-06-04 9:30 ` Ingo Molnar
2004-06-03 12:57 ` Brian Gerst
2004-06-04 9:39 ` Ingo Molnar
2004-06-04 10:41 ` Christoph Hellwig
2004-06-04 10:48 ` William Lee Irwin III
2004-06-03 16:21 ` Ulrich Drepper
2004-06-03 19:30 ` Kurt Garloff
2004-06-02 21:43 ` Andi Kleen
2004-06-03 0:11 ` Rusty Russell
2004-06-03 0:17 ` Jeff Garzik
2004-06-03 7:24 ` Ingo Molnar
2004-06-03 8:47 ` Ingo Molnar
2004-06-03 8:53 ` Ingo Molnar
2004-06-04 0:04 ` Rusty Russell
2004-06-03 9:07 ` Ingo Molnar
2004-06-03 14:36 ` Gerhard Mack
2004-06-03 16:22 ` Arjan van de Ven
2004-06-04 9:36 ` Ingo Molnar
2004-06-04 11:59 ` Stephen Wille Padnos
[not found] <22L0f-5Ci-11@gated-at.bofh.it>
[not found] ` <22O7J-8dw-11@gated-at.bofh.it>
[not found] ` <22Wf4-5Xv-23@gated-at.bofh.it>
2004-06-03 9:43 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2004-06-04 18:01 Nakajima, Jun
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