[IPV6]: Fix IPV6_RECVERR for connected raw sockets.

Based on patch from Dmitry Butskoy <buc@odusz.so-cdu.ru>.

Closes: 10437
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 059298baa1dd..6193b124cbc7 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -357,8 +357,10 @@ void raw6_icmp_error(struct sk_buff *skb, int nexthdr,
         read_lock(&raw_v6_hashinfo.lock);
         sk = sk_head(&raw_v6_hashinfo.ht[hash]);
         if (sk != NULL) {
-                saddr = &ipv6_hdr(skb)->saddr;
-                daddr = &ipv6_hdr(skb)->daddr;
+                /* Note: ipv6_hdr(skb) != skb->data */
+                struct ipv6hdr *ip6h = (struct ipv6hdr *)skb->data;
+                saddr = &ip6h->saddr;
+                daddr = &ip6h->daddr;
                 net = dev_net(skb->dev);
 
                 while ((sk = __raw_v6_lookup(net, sk, nexthdr, saddr, daddr,