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Message-ID: <AANLkTimtsB0B98E2xcoJgRsPwSpwuG+ahT+LX0s1YwpX@mail.gmail.com> Date: Thu, 17 Mar 2011 20:15:06 +0800 From: Changli Gao <xiaosuo@...il.com> To: Vasiliy Kulikov <segoon@...nwall.com> Cc: Patrick McHardy <kaber@...sh.net>, linux-kernel@...r.kernel.org, security@...nel.org, "David S. Miller" <davem@...emloft.net>, Alexey Kuznetsov <kuznet@....inr.ac.ru>, James Morris <jmorris@...ei.org>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>, netfilter-devel@...r.kernel.org, netfilter@...r.kernel.org, coreteam@...filter.org, netdev@...r.kernel.org Subject: Re: [PATCH v2] ipv4: netfilter: ipt_CLUSTERIP: fix buffer overflow On Thu, Mar 17, 2011 at 7:32 PM, Vasiliy Kulikov <segoon@...nwall.com> 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@...nwall.com> Acked-by: Changli Gao <xiaosuo@...il.com> -- Regards, Changli Gao(xiaosuo@...il.com) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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