From: Phil Sutter <phil@nwl.cc>
Date: Thu, 24 Aug 2017 09:46:34 +0000 (+0200)
Subject: tipc/bearer: Prevent NULL pointer dereference
X-Git-Tag: v4.13.0~32
X-Git-Url: https://git.proxmox.com/?p=mirror_iproute2.git;a=commitdiff_plain;h=70a6df3962b8448fc9c28d72606828a004ed5b6b

tipc/bearer: Prevent NULL pointer dereference

Signed-off-by: Phil Sutter <phil@nwl.cc>
---

diff --git a/tipc/bearer.c b/tipc/bearer.c
index c3d4491f..0d845701 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;