netdev - Re: [patch v2] phonet: some signedness bugs

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Message-Id: <20110113.123002.46348652.davem@davemloft.net>
Date:	Thu, 13 Jan 2011 12:30:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	remi.denis-courmont@...ia.com
Cc:	error27@...il.com, dan.j.rosenberg@...il.com,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch v2] phonet: some signedness bugs

From: "Rémi Denis-Courmont" <remi.denis-courmont@...ia.com>
Date: Thu, 13 Jan 2011 14:32:57 +0200

> On Tuesday 11 January 2011 02:06:20 ext David Miller, you wrote:
>> From: Dan Carpenter <error27@...il.com>
>> Date: Mon, 10 Jan 2011 17:06:58 +0300
>> 
>> > Dan Rosenberg pointed out that there were some signed comparison bugs
>> > in the phonet protocol.
>> > 
>> > http://marc.info/?l=full-disclosure&m=129424528425330&w=2
>> > 
>> > The problem is that we check for array overflows but "protocol" is
>> > signed and we don't check for array underflows.  If you have already
>> > have CAP_SYS_ADMIN then you could use the bugs to get root, or someone
>> > could cause an oops by mistake.
>> > 
>> > Signed-off-by: Dan Carpenter <error27@...il.com>
>> 
>> Applied.
> 
> Shouldn't this be sent to stable trees?

It will be.
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