diff --git a/drivers/staging/ks7010/ks_wlan_net.c b/drivers/staging/ks7010/ks_wlan_net.c
index b2b4fa4c3834..498ea7754dcc 100644
--- a/drivers/staging/ks7010/ks_wlan_net.c
+++ b/drivers/staging/ks7010/ks_wlan_net.c
@@ -1404,6 +1404,7 @@ static int ks_wlan_set_scan(struct net_device *dev,
 	struct ks_wlan_private *priv =
 	    (struct ks_wlan_private *)netdev_priv(dev);
 	struct iw_scan_req *req = NULL;
+	int len;
 	DPRINTK(2, "\n");
 
 	if (priv->sleep_mode == SLP_SLEEP) {
@@ -1415,8 +1416,9 @@ static int ks_wlan_set_scan(struct net_device *dev,
 	if (wrqu->data.length == sizeof(struct iw_scan_req)
 	    && wrqu->data.flags & IW_SCAN_THIS_ESSID) {
 		req = (struct iw_scan_req *)extra;
-		priv->scan_ssid_len = req->essid_len;
-		memcpy(priv->scan_ssid, req->essid, priv->scan_ssid_len);
+		len = min_t(int, req->essid_len, IW_ESSID_MAX_SIZE);
+		priv->scan_ssid_len = len;
+		memcpy(priv->scan_ssid, req->essid, len);
 	} else {
 		priv->scan_ssid_len = 0;
 	}