1 files changed, 21 insertions, 0 deletions

diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 114a92e4258d..c323643ffcf9 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -53,6 +53,17 @@ static const u_int8_t invmap[] = {
         [ICMPV6_NI_REPLY - 128]         = ICMPV6_NI_QUERY +1
 };
 
+static const u_int8_t noct_valid_new[] = {
+        [ICMPV6_MGM_QUERY - 130] = 1,
+        [ICMPV6_MGM_REPORT -130] = 1,
+        [ICMPV6_MGM_REDUCTION - 130] = 1,
+        [NDISC_ROUTER_SOLICITATION - 130] = 1,
+        [NDISC_ROUTER_ADVERTISEMENT - 130] = 1,
+        [NDISC_NEIGHBOUR_SOLICITATION - 130] = 1,
+        [NDISC_NEIGHBOUR_ADVERTISEMENT - 130] = 1,
+        [ICMPV6_MLD2_REPORT - 130] = 1
+};
+
 static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
                                 const struct nf_conntrack_tuple *orig)
 {
@@ -178,6 +189,7 @@ icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff,
 {
         const struct icmp6hdr *icmp6h;
         struct icmp6hdr _ih;
+        int type;
 
         icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
         if (icmp6h == NULL) {
@@ -194,6 +206,15 @@ icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff,
                 return -NF_ACCEPT;
         }
 
+        type = icmp6h->icmp6_type - 130;
+        if (type >= 0 && type < sizeof(noct_valid_new) &&
+            noct_valid_new[type]) {
+                skb->nfct = &nf_conntrack_untracked.ct_general;
+                skb->nfctinfo = IP_CT_NEW;
+                nf_conntrack_get(skb->nfct);
+                return NF_ACCEPT;
+        }
+
         /* is not error message ? */
         if (icmp6h->icmp6_type >= 128)
                 return NF_ACCEPT;