diff --git a/drivers/irqchip/irq-mst-intc.c b/drivers/irqchip/irq-mst-intc.c
index b5335f6fd6d6..1070de5de8cc 100644
--- a/drivers/irqchip/irq-mst-intc.c
+++ b/drivers/irqchip/irq-mst-intc.c
@@ -263,6 +263,9 @@ static int __init mst_intc_of_init(struct device_node *dn,
 	    of_property_read_u32_index(dn, "mstar,irqs-map-range", 1, &irq_end))
 		return -EINVAL;
 
+	if (irq_end < irq_start || irq_end - irq_start >= MST_INTC_MAX_IRQS)
+		return -EINVAL;
+
 	cd = kzalloc_obj(*cd);
 	if (!cd)
 		return -ENOMEM;