1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index f3e00c5cd1ed..9de6a698f91d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -233,7 +233,8 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
                          */
                         do {
                                 if (low <= snum && snum <= high &&
-                                    !test_bit(snum >> udptable->log, bitmap))
+                                    !test_bit(snum >> udptable->log, bitmap) &&
+                                    !inet_is_reserved_local_port(snum))
                                         goto found;
                                 snum += rand;
                         } while (snum != first);