--- a/sys/dev/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/sys/dev/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -1858,12 +1858,16 @@
 	if (data->vdd_gfx_control == SMU7_VOLTAGE_CONTROL_BY_SVID2) {
 		for (entry_id = 0; entry_id < sclk_table->count; ++entry_id) {
 			voltage_id = sclk_table->entries[entry_id].vddInd;
+			if (voltage_id >= table_info->vddgfx_lookup_table->count)
+				return -EINVAL;
 			sclk_table->entries[entry_id].vddgfx =
 				table_info->vddgfx_lookup_table->entries[voltage_id].us_vdd;
 		}
 	} else {
 		for (entry_id = 0; entry_id < sclk_table->count; ++entry_id) {
 			voltage_id = sclk_table->entries[entry_id].vddInd;
+			if (voltage_id >= table_info->vddc_lookup_table->count)
+				return -EINVAL;
 			sclk_table->entries[entry_id].vddc =
 				table_info->vddc_lookup_table->entries[voltage_id].us_vdd;
 		}
@@ -1871,12 +1875,16 @@
 
 	for (entry_id = 0; entry_id < mclk_table->count; ++entry_id) {
 		voltage_id = mclk_table->entries[entry_id].vddInd;
+		if (voltage_id >= table_info->vddc_lookup_table->count)
+			return -EINVAL;
 		mclk_table->entries[entry_id].vddc =
 			table_info->vddc_lookup_table->entries[voltage_id].us_vdd;
 	}
 
 	for (entry_id = 0; entry_id < mm_table->count; ++entry_id) {
 		voltage_id = mm_table->entries[entry_id].vddcInd;
+		if (voltage_id >= table_info->vddc_lookup_table->count)
+			return -EINVAL;
 		mm_table->entries[entry_id].vddc =
 			table_info->vddc_lookup_table->entries[voltage_id].us_vdd;
 	}