diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
index e410048aa0ab..9a1038981824 100644
--- a/drivers/power/supply/cros_usbpd-charger.c
+++ b/drivers/power/supply/cros_usbpd-charger.c
@@ -125,6 +125,11 @@ static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)
 	if (ret < 0)
 		return ret;
 
+	if (resp.port_count > EC_USB_PD_MAX_PORTS) {
+		dev_warn(charger->dev, "Charge port count out of bounds\n");
+		return EC_USB_PD_MAX_PORTS;
+	}
+
 	return resp.port_count;
 }
 
@@ -138,6 +143,11 @@ static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)
 	if (ret < 0)
 		return ret;
 
+	if (resp.num_ports > EC_USB_PD_MAX_PORTS) {
+		dev_warn(charger->dev, "USB PD port count out of bounds\n");
+		return EC_USB_PD_MAX_PORTS;
+	}
+
 	return resp.num_ports;
 }