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Message-Id: <20130212203901.148569211@linuxfoundation.org> Date: Tue, 12 Feb 2013 12:41:27 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Sarveshwar Bandi <sarveshwar.bandi@...lex.com>, "David S. Miller" <davem@...emloft.net> Subject: [ 33/36] bridge: Pull ip header into skb->data before looking into ip header. 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sarveshwar Bandi <sarveshwar.bandi@...lex.com> [ Upstream commit 6caab7b0544e83e6c160b5e80f5a4a7dd69545c7 ] 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: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- net/bridge/br_netfilter.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -254,6 +254,9 @@ static int br_parse_ip_options(struct sk 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); -- 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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