Fixes coverity errors in ACLK (#11322)dashboard-v2.19.1

Fixes CID371885 and CID371884

2 files changed, 27 insertions, 3 deletions

diff --git a/aclk/aclk.c b/aclk/aclk.c
index 3cb25a67d3..416f28e7ee 100644
--- a/aclk/aclk.c
+++ b/aclk/aclk.c
@@ -972,7 +972,12 @@ void ng_aclk_host_state_update(RRDHOST *host, int cmd)
 
 void aclk_send_node_instances()
 {
-    struct node_instance_list *list = get_node_list();
+    struct node_instance_list *list_head = get_node_list();
+    struct node_instance_list *list = list_head;
+    if (unlikely(!list)) {
+        error_report("Failure to get_node_list from DB!");
+        return;
+    }
     while (!uuid_is_null(list->host_id)) {
         if (!uuid_is_null(list->node_id)) {
             aclk_query_t query = aclk_query_new(NODE_STATE_UPDATE);
@@ -1001,4 +1006,5 @@ void aclk_send_node_instances()
 
         list++;
     }
+    freez(list_head);
 }
diff --git a/aclk/aclk_rx_msgs.c b/aclk/aclk_rx_msgs.c
index 26e8fdc51b..a97166716f 100644
--- a/aclk/aclk_rx_msgs.c
+++ b/aclk/aclk_rx_msgs.c
@@ -270,10 +270,28 @@ void aclk_handle_new_cloud_msg(const char *message_type, const char *msg, size_t
     }
     if (!strcmp(message_type, "CreateNodeInstanceResult")) {
         node_instance_creation_result_t res = parse_create_node_instance_result(msg, msg_len);
+        if (!res.machine_guid || !res.node_id) {
+            error_report("Error parsing CreateNodeInstanceResult");
+            freez(res.machine_guid);
+            freez(res.node_id);
+            return;
+        }
+
         debug(D_ACLK, "CreateNodeInstanceResult: guid:%s nodeid:%s", res.machine_guid, res.node_id);
+
         uuid_t host_id, node_id;
-        uuid_parse(res.machine_guid, host_id);
-        uuid_parse(res.node_id, node_id);
+        if (uuid_parse(res.machine_guid, host_id)) {
+            error("Error parsing machine_guid provided by CreateNodeInstanceResult");
+            freez(res.machine_guid);
+            freez(res.node_id);
+            return;
+        }
+        if (uuid_parse(res.node_id, node_id)) {
+            error("Error parsing node_id provided by CreateNodeInstanceResult");
+            freez(res.machine_guid);
+            freez(res.node_id);
+            return;
+        }
         update_node_id(&host_id, &node_id);
 
         aclk_query_t query = aclk_query_new(NODE_STATE_UPDATE);