netdev - Re: [Suggestion] net/netfilter: strcpy for timeout->name

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Message-ID: <50ACC66F.3080506@asianux.com>
Date:	Wed, 21 Nov 2012 20:17:51 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Florian Westphal <fw@...len.de>
CC:	Xue Ying <ying.xue0@...il.com>, David Miller <davem@...emloft.net>,
	Shan Wei <shanwei88@...il.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [Suggestion] net/netfilter: strcpy for timeout->name

于 2012年11月21日 19:39, Florian Westphal 写道:
> Chen Gang <gang.chen@...anux.com> wrote:
>> Please help checking net/netfilter/nfnetlink_cttimeout.c:
>>   I suggest, we use strncpy instead of strcpy at line 143. 
>>   just like we have already used strncmp at line 94.
> [..]
>>   after checking the calling work flow:
>>     the length of nla_data(cda[CTA_TIMEOUT_NAME]) is not limited in server side.
> 
> Good catch, classic buffer overflow.
> 
> I've sent a patch to add the missing "len" policy.  Thanks for reporting
> this bug.

  thank you for your reply, too.

  regard

gchen

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> 


-- 
Chen Gang

Asianux Corporation
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