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Message-Id: <1361299784-8830-70-git-send-email-herton.krzesinski@canonical.com> Date: Tue, 19 Feb 2013 15:49:32 -0300 From: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Sarveshwar Bandi <sarveshwar.bandi@...lex.com>, "David S. Miller" <davem@...emloft.net>, Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> Subject: [PATCH 69/81] bridge: Pull ip header into skb->data before looking into ip header. 3.5.7.6 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Sarveshwar Bandi <sarveshwar.bandi@...lex.com> commit 6caab7b0544e83e6c160b5e80f5a4a7dd69545c7 upstream. If lower layer driver leaves the ip header in the skb fragment, it needs to be first pulled into skb->data before inspecting ip header length or ip version number. Signed-off-by: Sarveshwar Bandi <sarveshwar.bandi@...lex.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com> --- net/bridge/br_netfilter.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index e41456b..ab52468 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -256,6 +256,9 @@ static int br_parse_ip_options(struct sk_buff *skb) struct net_device *dev = skb->dev; u32 len; + if (!pskb_may_pull(skb, sizeof(struct iphdr))) + goto inhdr_error; + iph = ip_hdr(skb); opt = &(IPCB(skb)->opt); -- 1.7.9.5 -- 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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