diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
index 7d24648ff1..234b7e9147 100644
--- a/northd/ovn-northd.c
+++ b/northd/ovn-northd.c
@@ -520,7 +520,9 @@ update_sequence_numbers(int64_t loop_start_time,
                              chassis_priv->name);
             }
 
-            if (chassis_priv->nb_cfg < hv_cfg) {
+            /* Detect if overflows happened within the cfg update. */
+            int64_t delta = chassis_priv->nb_cfg - hv_cfg;
+            if (chassis_priv->nb_cfg < hv_cfg || delta > INT32_MAX) {
                 hv_cfg = chassis_priv->nb_cfg;
                 hv_cfg_ts = chassis_priv->nb_cfg_timestamp;
             } else if (chassis_priv->nb_cfg == hv_cfg &&
diff --git a/utilities/ovn-nbctl.c b/utilities/ovn-nbctl.c
index 9399f9462b..03b18595dc 100644
--- a/utilities/ovn-nbctl.c
+++ b/utilities/ovn-nbctl.c
@@ -122,7 +122,9 @@ nbctl_post_execute(struct ovsdb_idl *idl, struct ovsdb_idl_txn *txn,
             int64_t cur_cfg = (wait_type == NBCTL_WAIT_SB
                                ? nb->sb_cfg
                                : MIN(nb->sb_cfg, nb->hv_cfg));
-            if (cur_cfg >= next_cfg) {
+            /* Detect if overflows happened within the cfg update. */
+            int64_t delta = cur_cfg - next_cfg;
+            if (cur_cfg >= next_cfg && delta < INT32_MAX) {
                 if (print_wait_time) {
                     printf("Time spent on processing nb_cfg %"PRId64":\n",
                            next_cfg);