diff --git a/dsp/q6afe.c b/dsp/q6afe.c
index 88124df..7f594f2 100644
--- a/dsp/q6afe.c
+++ b/dsp/q6afe.c
@@ -10160,6 +10160,7 @@
 
 	if (cal_data == NULL ||
 	    data_size > sizeof(*cal_data) ||
+	    data_size < sizeof(cal_data->cal_hdr) ||
 	    this_afe.cal_data[AFE_FB_SPKR_PROT_TH_VI_CAL] == NULL)
 		return 0;
 
@@ -10188,7 +10189,8 @@
 	pr_debug("%s: cal_type = %d\n", __func__, cal_type);
 	if (this_afe.cal_data[AFE_FB_SPKR_PROT_V4_EX_VI_CAL] == NULL ||
 	    cal_data == NULL ||
-	    data_size != sizeof(*cal_data))
+	    data_size > sizeof(*cal_data) ||
+	    data_size < sizeof(cal_data->cal_hdr))
 		goto done;
 
 	mutex_lock(&this_afe.cal_data[AFE_FB_SPKR_PROT_V4_EX_VI_CAL]->lock);
@@ -10255,7 +10257,8 @@
 	pr_debug("%s: cal_type = %d\n", __func__, cal_type);
 	if (this_afe.cal_data[AFE_FB_SPKR_PROT_EX_VI_CAL] == NULL ||
 	    cal_data == NULL ||
-	    data_size != sizeof(*cal_data))
+	    data_size > sizeof(*cal_data) ||
+	    data_size < sizeof(cal_data->cal_hdr))
 		goto done;
 
 	mutex_lock(&this_afe.cal_data[AFE_FB_SPKR_PROT_EX_VI_CAL]->lock);