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path: root/drivers/net/ipvlan/ipvlan_core.c
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Diffstat (limited to 'drivers/net/ipvlan/ipvlan_core.c')
-rw-r--r--drivers/net/ipvlan/ipvlan_core.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index 4476425b1033..11c1e7950fe5 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -165,8 +165,26 @@ static void *ipvlan_get_L3_hdr(struct ipvl_port *port, struct sk_buff *skb, int
/* Only Neighbour Solicitation pkts need different treatment */
if (ipv6_addr_any(&ip6h->saddr) &&
ip6h->nexthdr == NEXTHDR_ICMP) {
+ struct icmp6hdr *icmph;
+
+ if (unlikely(!pskb_may_pull(skb, sizeof(*ip6h) + sizeof(*icmph))))
+ return NULL;
+
+ ip6h = ipv6_hdr(skb);
+ icmph = (struct icmp6hdr *)(ip6h + 1);
+
+ if (icmph->icmp6_type == NDISC_NEIGHBOUR_SOLICITATION) {
+ /* Need to access the ipv6 address in body */
+ if (unlikely(!pskb_may_pull(skb, sizeof(*ip6h) + sizeof(*icmph)
+ + sizeof(struct in6_addr))))
+ return NULL;
+
+ ip6h = ipv6_hdr(skb);
+ icmph = (struct icmp6hdr *)(ip6h + 1);
+ }
+
*type = IPVL_ICMPV6;
- lyr3h = ip6h + 1;
+ lyr3h = icmph;
}
break;
}

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