From 73b2d3ee4bbdbfba7db035d9b89a2bcffc15e1ba Mon Sep 17 00:00:00 2001
From: Andrea Claudi <aclaudi@redhat.com>
Date: Mon, 29 Apr 2019 20:08:08 +0200
Subject: [PATCH] tipc/bearer: Prevent NULL pointer dereference

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
Upstream Status: iproute2.git commit 70a6df3962b84

commit 70a6df3962b8448fc9c28d72606828a004ed5b6b
Author: Phil Sutter <phil@nwl.cc>
Date:   Thu Aug 24 11:46:34 2017 +0200

    tipc/bearer: Prevent NULL pointer dereference

    Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 tipc/bearer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tipc/bearer.c b/tipc/bearer.c
index c3d4491f8f6ef..0d84570150624 100644
--- a/tipc/bearer.c
+++ b/tipc/bearer.c
@@ -439,7 +439,7 @@ static int cmd_bearer_enable(struct nlmsghdr *nlh, const struct cmd *cmd,
 		return err;
 
 	opt = get_opt(opts, "media");
-	if (strcmp(opt->val, "udp") == 0) {
+	if (opt && strcmp(opt->val, "udp") == 0) {
 		err = nl_add_udp_enable_opts(nlh, opts, cmdl);
 		if (err)
 			return err;
-- 
2.21.0