[uml-devel] grsecurity + skas UML patch for 2.6.14.5

[uml-devel] grsecurity + skas UML patch for 2.6.14.5

[Lubomir Host]

Hi guys,

I have one question. It is possible to run grsecurity kernel with skas3
UML (User Mode Linux) patch from 

http://www.user-mode-linux.org/~blaisorblade/patches/skas3-2.6/skas-2.6.14-v8.2/skas-2.6.14-v8.2.patch.bz2

? I have tried to create kernel with following patches (apply in this
order on linux-2.6.14.3):

http://www.grsecurity.net/grsecurity-2.1.7-2.6.14.3-200512111706.patch.gz
http://www.kernel.org/pub/linux/kernel/v2.6/incr/patch-2.6.14.3-4.bz2
http://www.kernel.org/pub/linux/kernel/v2.6/incr/patch-2.6.14.4-5.bz2
http://www.user-mode-linux.org/~blaisorblade/patches/skas3-2.6/skas-2.6.14-v8.2/skas-2.6.14-v8.2.patch.bz2

but little problem exists in linux-2.6.14.5-grsec-skas/mm/mmap.c.
Problem is with function do_mmap_pgoff(), because this function is
renamed in grsec and in skas patch too. I merge these patches together
but I don't have enought experiences to check, if everything is OK.

Please, can somebody check my patch? My patch can be downloaded from

http://rajo.platon.sk/patches/linux-2.6/patch-2.6.14.5--grsecurity-2.1.7--skas3-v8.2.patch
http://rajo.platon.sk/patches/linux-2.6/

Thanks, best regards

-- 
Lubomir Host 'rajo' <rajo AT platon.sk>   ICQ #:  257322664   ,''`.
Platon Group                              http://platon.sk/  : :' :
Homepage: http://rajo.platon.sk/                             `. `'
http://www.gnu.org/philosophy/no-word-attachments.html         `-


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Re: [uml-devel] grsecurity + skas UML patch for 2.6.14.5

[Blaisorblade]

On Tuesday 03 January 2006 14:55, Lubomir Host wrote:
> Hi guys,
>
> I have one question. It is possible to run grsecurity kernel with skas3
> UML (User Mode Linux) patch from
>
> http://www.user-mode-linux.org/~blaisorblade/patches/skas3-2.6/skas-2.6.14-
>v8.2/skas-2.6.14-v8.2.patch.bz2
>
> ? I have tried to create kernel with following patches (apply in this
> order on linux-2.6.14.3):
>
> http://www.grsecurity.net/grsecurity-2.1.7-2.6.14.3-200512111706.patch.gz
> http://www.kernel.org/pub/linux/kernel/v2.6/incr/patch-2.6.14.3-4.bz2
> http://www.kernel.org/pub/linux/kernel/v2.6/incr/patch-2.6.14.4-5.bz2
> http://www.user-mode-linux.org/~blaisorblade/patches/skas3-2.6/skas-2.6.14-
>v8.2/skas-2.6.14-v8.2.patch.bz2
>
> but little problem exists in linux-2.6.14.5-grsec-skas/mm/mmap.c.
> Problem is with function do_mmap_pgoff(), because this function is
> renamed in grsec and in skas patch too. I merge these patches together
> but I don't have enought experiences to check, if everything is OK.

> Please, can somebody check my patch? My patch can be downloaded from

> http://rajo.platon.sk/patches/linux-2.6/patch-2.6.14.5--grsecurity-2.1.7--s
>kas3-v8.2.patch http://rajo.platon.sk/patches/linux-2.6/

I don't have the time to check right now, but last time this question was 
brought up I found that a straightforward merge between patches (which had 
exactly the same problem) had a few (conceptual/theoretical) problems about 
security - I don't remember the details, but I didn't publish the result as I 
didn't find a satisfying solution.

"Satisfying" means "where all the restrictions imposed by normal GrSecurity 
continue to hold".
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	

	
		
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