[PATCH] bridge: Pull ip header into skb->data before looking into ip header.
flat view
STALE5112d
From: <hidden>
Date: 2012-10-10 11:15:07
Subsystem:
ethernet bridge, netfilter, networking [general], the rest · Maintainers:
Nikolay Aleksandrov, Ido Schimmel, Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Sarveshwar Bandi <redacted> 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 <redacted> --- 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 68e8f36..fe43bc7 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c@@ -265,6 +265,9 @@ 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);
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1.7.9.5