linux-kernel - Re: [27/37] tehuti: move ioctl perm check closer to function start (CVE-2008-1675)

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Date:	Tue, 29 Apr 2008 19:13:09 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Greg KH <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	"Theodore Ts'o" <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Domenico Andreoli <cavokz@...il.com>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	Jeff Garzik <jgarzik@...hat.com>
Subject: Re: [27/37] tehuti: move ioctl perm check closer to function start
 (CVE-2008-1675)

On Tue, 29 Apr 2008 10:19:01 -0700
Greg KH <gregkh@...e.de> wrote:

> 2.6.25-stable review patch.  If anyone has any objections, please let us
> know.
> 
> ------------------
> From: Jeff Garzik <jeff@...zik.org>
> 
> Commit f946dffed6334f08da065a89ed65026ebf8b33b4 upstream
> 
> Noticed by davem.
> 
> Signed-off-by: Jeff Garzik <jgarzik@...hat.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
> 
> ---
>  drivers/net/tehuti.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> --- a/drivers/net/tehuti.c
> +++ b/drivers/net/tehuti.c
> @@ -649,6 +649,9 @@ static int bdx_ioctl_priv(struct net_dev
>  		DBG("%d 0x%x 0x%x\n", data[0], data[1], data[2]);
>  	}
>  
> +	if (!capable(CAP_NET_ADMIN))
> +		return -EPERM;
> +

Should be CAP_SYS_RAWIO

Alan
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