lkml.org 
[lkml]   [2004]   [Jun]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
DateThu, 3 Jun 2004 17:54:22 +0200
FromAndi Kleen <>
SubjectRe: [announce] [patch] NX (No eXecute) support for x86, 2.6.7-rc2-bk2
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:03    [from the cache]
©2003-2010