inet: fix possible panic in reqsk_queue_unlink()

[cascardo/linux.git] / net / ipv4 / tcp_ipv4.c

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 3571f2b..fc1c658 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1348,7 +1348,8 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
        req = inet_csk_search_req(sk, th->source, iph->saddr, iph->daddr);
        if (req) {
                nsk = tcp_check_req(sk, skb, req, false);
-               reqsk_put(req);
+               if (!nsk)
+                       reqsk_put(req);
                return nsk;
        }