[NETFILTER]: H.323 helper: fix possible NULL-ptr dereference

[cascardo/linux.git] / net / ipv4 / netfilter / ip_conntrack_helper_h323.c

diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323.c b/net/ipv4/netfilter/ip_conntrack_helper_h323.c
index af35235..9a39e29 100644 (file)
--- a/net/ipv4/netfilter/ip_conntrack_helper_h323.c
+++ b/net/ipv4/netfilter/ip_conntrack_helper_h323.c
@@ -1200,7 +1200,7 @@ static struct ip_conntrack_expect *find_expect(struct ip_conntrack *ct,
        tuple.dst.protonum = IPPROTO_TCP;
 
        exp = __ip_conntrack_expect_find(&tuple);
-       if (exp->master == ct)
+       if (exp && exp->master == ct)
                return exp;
        return NULL;
 }