netdev - Re: [PATCH] econet: 4 byte infoleak to the network

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Date:	Thu, 17 Mar 2011 11:50:01 +0000
From:	Phil Blundell <philb@....org>
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	linux-kernel@...r.kernel.org, security@...nel.org,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Tejun Heo <tj@...nel.org>, Nelson Elhage <nelhage@...lice.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH] econet: 4 byte infoleak to the network

On Thu, 2011-03-17 at 14:40 +0300, Vasiliy Kulikov wrote:
> struct aunhdr has 4 padding bytes between 'pad' and 'handle' fields on
> x86_64.  These bytes are not initialized in the variable 'ah' before
> sending 'ah' to the network.  This leads to 4 bytes kernel stack
> infoleak.
> 
> This bug was introduced before the git epoch.
> 
> Signed-off-by: Vasiliy Kulikov <segoon@...nwall.com>

Well spotted.  Thanks for the patch.

Acked-by: Phil Blundell <philb@....org>

p.


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