From: Chris Wright <chris@wirex.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Chris Wright <chris@wirex.com>, Junfeng Yang <yjf@stanford.edu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
mc@cs.stanford.edu
Subject: Re: [CHECKER] potential dereference of user pointer errors
Date: Sat, 22 Mar 2003 12:19:57 -0800 [thread overview]
Message-ID: <20030322121957.A2865@figure1.int.wirex.com> (raw)
In-Reply-To: <1048366179.9219.38.camel@irongate.swansea.linux.org.uk>; from alan@lxorguk.ukuu.org.uk on Sat, Mar 22, 2003 at 08:49:39PM +0000
* Alan Cox (alan@lxorguk.ukuu.org.uk) wrote:
> On Fri, 2003-03-21 at 22:15, Chris Wright wrote:
> > on first pass of the cmd. However, this is inconsistent with the rest
> > of the file, so here is a patch to use kcmd.resbuf. I also added a NULL
> > check, as done in similar funcitons in this file. Alan, this look ok?
>
> Looks slightly wrong to me
>
> #1 ->resbuf = NULL is a completely acceptable if odd user choice. If invalid
> its covered
OK, I wasn't sure if it was valid. I noticed the other routines in that
file making similar checks.
> #2 - We copy to the users nominated cmd->resbuf. You are correct there,
> that we should be using the kernel side copy. Fixed in my tree.
Great, thanks.
-chris
--
Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
next prev parent reply other threads:[~2003-03-22 20:10 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-04 11:12 [CHECKER] potential races in kernel/*.c mm/*.c net/*ipv4*.c Dawson Engler
2003-03-04 12:24 ` Hugh Dickins
2003-03-04 13:23 ` Martin Josefsson
2003-03-21 6:33 ` [CHECKER] potential dereference of user pointer errors Junfeng Yang
2003-03-21 21:44 ` Chris Wright
2003-03-21 21:58 ` Junfeng Yang
2003-03-21 22:06 ` Chris Wright
2003-03-21 22:08 ` Junfeng Yang
2003-03-21 22:15 ` Chris Wright
2003-03-22 20:49 ` Alan Cox
2003-03-22 20:19 ` Chris Wright [this message]
2003-03-21 23:55 ` Chris Wright
2003-03-27 8:07 ` Jan Kasprzak
2003-03-27 17:10 ` Chris Wright
2003-04-21 7:49 ` [CHECKER] Help Needed! Junfeng Yang
2003-04-21 21:26 ` Chris Wright
2003-04-26 2:18 ` [CHECKER] 30 potential dereference of user-pointer errors Junfeng Yang
2003-04-27 9:26 ` James Morris
2003-04-28 1:55 ` Junfeng Yang
2003-04-27 20:18 ` Nick Holloway
2003-04-27 21:14 ` Junfeng Yang
2003-04-27 21:29 ` Junfeng Yang
2003-04-28 6:43 ` [CHECKER] 3 potential user-pointer errors in drivers/usb/serial that can print out arbitrary kernel data Junfeng Yang
2003-04-29 7:25 ` Greg KH
2003-04-29 9:14 ` Junfeng Yang
2003-04-28 6:50 ` [CHECKER] 8 potential user-pointer errors that allow arbitrary writes to kernel Junfeng Yang
2003-04-28 12:49 ` Alan Cox
2003-04-28 19:11 ` Junfeng Yang
2003-04-29 0:02 ` [CHECKER] 5 potential user-pointer errors in write_proc Junfeng Yang
2003-04-29 7:26 ` [CHECKER] 30 potential dereference of user-pointer errors Greg KH
2003-03-22 0:15 ` [CHECKER] potential dereference of user pointer errors Chris Wright
2003-03-22 0:32 ` Greg KH
2003-03-22 0:47 ` Chris Wright
2003-03-22 1:00 ` Greg KH
2003-03-22 0:32 ` Chris Wright
2003-03-23 23:10 ` Junfeng Yang
2003-03-24 0:24 ` [CHECKER] 63 potential calling blocking functions with locks held errors Junfeng Yang
2003-03-24 12:35 ` [CHECKER] 8 potential calling blocking kmalloc(GFP_KERNEL) " Junfeng Yang
2003-03-24 0:29 ` [CHECKER] 1 potential double unlock error Junfeng Yang
2003-03-24 9:07 ` [CHECKER] potential dereference of user pointer errors Jaroslav Kysela
2003-03-24 22:28 ` Raja R Harinath
2003-03-25 0:44 ` David S. Miller
2003-03-25 18:52 ` Raja R Harinath
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