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Date: Thu, 17 Sep 2009 15:03:40 +0800
From: Eugene Teo <>
CC: "Steven M. Christey" <>, Willy Tarreau <>
Subject: Re: CVE-2009-2903 kernel: appletalk: denial of service
 when handling IP tunnelled over DDP datagrams

Eugene Teo wrote:
> Eugene Teo wrote:
>> The check for the ipddpN device in the handle_ip_over_ddp() function 
>> returns -NODEV to the atalk_rcv() function when the device does not 
>> exist. The atalk_rcv() function then directly returns that value to 
>> its caller. There is a missing call to kfree_skb() in these unaccepted 
>> IP-DDP datagram that can exhaust the kernel memory eventually. It 
>> affects Linux hosts with appletalk and ipddp modules loaded, that are 
>> attached to the same link. Thanks to Mark Smith for reporting this 
>> issue to us.
> Some updates and a quick analysis at: 
> and 

Should be

Thanks, Eugene

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