From 6baeafd1f2a54ca041ff71778ebda9fac75aad12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Tue, 13 Dec 2016 20:16:40 -0300
Subject: Linux-libre 4.8.14-gnu

---
 net/tipc/udp_media.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'net/tipc/udp_media.c')

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index ae7e14cae..f60f346e7 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -372,6 +372,11 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b,
 		udp_conf.local_ip.s_addr = htonl(INADDR_ANY);
 		udp_conf.use_udp_checksums = false;
 		ub->ifindex = dev->ifindex;
+		if (tipc_mtu_bad(dev, sizeof(struct iphdr) +
+				      sizeof(struct udphdr))) {
+			err = -EINVAL;
+			goto err;
+		}
 		b->mtu = dev->mtu - sizeof(struct iphdr)
 			- sizeof(struct udphdr);
 #if IS_ENABLED(CONFIG_IPV6)
-- 
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