Re: [PATCH v2] ipv4: netfilter: ipt_CLUSTERIP: fix buffer overflow
From: Patrick McHardy
Date: Sun Mar 20 2011 - 10:43:48 EST
Am 17.03.2011 13:15, schrieb Changli Gao:
> On Thu, Mar 17, 2011 at 7:32 PM, Vasiliy Kulikov <segoon@xxxxxxxxxxxx> wrote:
>> 'buffer' string is copied from userspace. It is not checked whether it is
>> zero terminated. This may lead to overflow inside of simple_strtoul().
>> Changli Gao suggested to copy not more than user supplied 'size' bytes.
>> It was introduced before the git epoch. Files "ipt_CLUSTERIP/*" are
>> root writable only by default, however, on some setups permissions might be
>> relaxed to e.g. network admin user.
>> Signed-off-by: Vasiliy Kulikov <segoon@xxxxxxxxxxxx>
> Acked-by: Changli Gao <xiaosuo@xxxxxxxxx>
Applied, thanks everyone.
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