diff options
Diffstat (limited to 'net/ipv4/netfilter/ip_nat_core.c')
-rw-r--r-- | net/ipv4/netfilter/ip_nat_core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c index 85ae0cabc8b..18daabc2206 100644 --- a/net/ipv4/netfilter/ip_nat_core.c +++ b/net/ipv4/netfilter/ip_nat_core.c @@ -420,6 +420,7 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, struct icmphdr icmp; struct iphdr ip; } *inside; + struct ip_conntrack_protocol *proto; struct ip_conntrack_tuple inner, target; int hdrlen = (*pskb)->nh.iph->ihl * 4; enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); @@ -455,10 +456,11 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, DEBUGP("icmp_reply_translation: translating error %p manp %u dir %s\n", *pskb, manip, dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY"); + /* rcu_read_lock()ed by nf_hook_slow */ + proto = __ip_conntrack_proto_find(inside->ip.protocol); if (!ip_ct_get_tuple(&inside->ip, *pskb, (*pskb)->nh.iph->ihl*4 + sizeof(struct icmphdr) + inside->ip.ihl*4, - &inner, - __ip_conntrack_proto_find(inside->ip.protocol))) + &inner, proto)) return 0; /* Change inner back to look like incoming packet. We do the |