diff --git a/src/devices/nm-lldp-listener.c b/src/devices/nm-lldp-listener.c
index 9cc1d08680..114a4ef27c 100644
--- a/src/devices/nm-lldp-listener.c
+++ b/src/devices/nm-lldp-listener.c
@@ -515,11 +515,13 @@ lldp_neighbor_new (sd_lldp_neighbor *neighbor_sd, GError **error)
 				l = data8[2];
 				if (len != 3 + l)
 					continue;
+				if (l > 32)
+					continue;
 
 				_lldp_attr_set_uint32 (neigh->attrs, LLDP_ATTR_ID_IEEE_802_1_VID,
 				                       _access_uint16 (&data8[0]));
 				_lldp_attr_set_str_ptr (neigh->attrs, LLDP_ATTR_ID_IEEE_802_1_VLAN_NAME,
-				                        &data8[3], len);
+				                        &data8[3], l);
 				break;
 			}
 			default:
diff --git a/src/devices/tests/test-lldp.c b/src/devices/tests/test-lldp.c
index bff85e6c94..38a7972f8f 100644
--- a/src/devices/tests/test-lldp.c
+++ b/src/devices/tests/test-lldp.c
@@ -222,11 +222,10 @@ TEST_RECV_FRAME_DEFINE (_test_recv_data1_frame0,
 	0x01, 0xe8,
 	0xfe, 0x07, 0x00, 0x80, 0xc2, 0x02, /* IEEE 802.1 - Port and Protocol VLAN ID */
 	0x01, 0x00, 0x00,
-	0xfe, 0x17, 0x00, 0x80, 0xc2, 0x03, /* IEEE 802.1 - VLAN Name */
-	0x01, 0xe8, 0x10, 0x76, 0x32, 0x2d,
+	0xfe, 0x16, 0x00, 0x80, 0xc2, 0x03, /* IEEE 802.1 - VLAN Name */
+	0x01, 0xe8, 0x0f, 0x76, 0x32, 0x2d,
 	0x30, 0x34, 0x38, 0x38, 0x2d, 0x30,
 	0x33, 0x2d, 0x30, 0x35, 0x30, 0x35,
-	0x00,
 	0xfe, 0x05, 0x00, 0x80, 0xc2, 0x04, /* IEEE 802.1 - Protocol Identity */
 	0x00,
 	0x00, 0x00                          /* End of LLDPDU */