From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Yongjun Date: Fri, 25 Jul 2008 02:40:32 +0000 Subject: [PATCHv2 3/4] DCCP: Fix to check missing sequence number for ICMP Message-Id: <48893D20.6020609@cn.fujitsu.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: dccp@vger.kernel.org If we want check the sequence number, the length of dccp packet must not less than __dccp_basic_hdr_len(dh). If the length of dccp packet is less than this value, check for sequence number will get unpredictable result. This patch fix the problem. Signed-off-by: Wei Yongjun --- net/dccp/ipv4.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 8fd4d57..0c5f82d 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -207,7 +207,7 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info) int err; struct net *net = dev_net(skb->dev); - if (skb->len < (iph->ihl << 2) + 8) { + if (skb->len < (iph->ihl << 2) + __dccp_basic_hdr_len(dh)) { ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS); return; }