diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index dca6e011cc40..28acfc6829df 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -4858,6 +4858,12 @@ static int ath11k_wmi_tlv_ext_hal_reg_caps(struct ath11k_base *soc,
 			return ret;
 		}
 
+		if (reg_cap.phy_id >= ARRAY_SIZE(soc->hal_reg_cap)) {
+			ath11k_warn(soc, "invalid reg cap phy_id %u\n",
+				    reg_cap.phy_id);
+			return -EINVAL;
+		}
+
 		memcpy(&soc->hal_reg_cap[reg_cap.phy_id],
 		       &reg_cap, sizeof(reg_cap));
 	}