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Date: Thu, 27 Mar 2003 09:10:58 -0800
From: Chris Wright <chris@wirex.com>
To: Jan Kasprzak <kas@informatics.muni.cz>
Cc: Junfeng Yang <yjf@stanford.edu>, linux-kernel@vger.kernel.org,
       mc@cs.stanford.edu
Subject: Re: [CHECKER] potential dereference of user pointer errors
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* Jan Kasprzak (kas@informatics.muni.cz) wrote:
> Chris Wright wrote:
> : Both cosa_readmem and cosa_download don't seem to do any validation of
> : the user supplied ptr at all before dereferncing it in get_user.  And
> : it'd make sense to use 'code' in cosa_reamdme (as in cosa_download)
> : instead of 'd->code'.  Jan, does this look OK?
> 
> 	Yes, you are right. I've missed this. However, it is not
> as bad as it looks like, because you need the CAP_SYS_RAWIO to
> exploit this. I agree this patch should be applied.

Thanks for the confirmation.
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net
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