Checksum of an IPv6 UDP packet is mandatory.
---
net/netfilter/nf_conntrack_proto_udp.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 9d7721c..31dc854 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -134,8 +134,15 @@ static int udp_error(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb,
}
/* Packet with no checksum */
- if (!hdr->check)
+ if (!hdr->check) {
+ if (pf == PF_INET6) {
+ if (LOG_INVALID(net, IPPROTO_UDP))
+ nf_log_packet(net, pf, 0, skb, NULL, NULL, NULL,
+ "nf_ct_udp: bad UDP checksum ");
+ return -NF_ACCEPT;
+ }
return NF_ACCEPT;
+ }
/* Checksum invalid? Ignore.
* We skip checking packets on the outgoing path
--
1.7.9.5
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