Date: Tue, 28 Jun 2011 14:59:37 -0300
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
To: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: marcel@holtmann.org, davem@davemloft.net, linux-bluetooth@vger.kernel.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        security@kernel.org
Subject: Re: [PATCH] Bluetooth: Prevent buffer overflow in l2cap config
 request
Message-ID: <20110628175937.GA23183@joana>
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	marcel@holtmann.org, davem@davemloft.net,
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	linux-kernel@vger.kernel.org, security@kernel.org
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Hi Dan,

* Dan Rosenberg <drosenberg@vsecurity.com> [2011-06-24 08:38:05 -0400]:

> A remote user can provide a small value for the command size field in
> the command header of an l2cap configuration request, resulting in an
> integer underflow when subtracting the size of the configuration request
> header.  This results in copying a very large amount of data via
> memcpy() and destroying the kernel heap.  Check for underflow.
> 
> Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
> Cc: stable <stable@kernel.org>
> ---
>  net/bluetooth/l2cap_core.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)

Applied, thanks.

	Gustavo
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