diff --git a/drivers/staging/vt6655/hostap.c b/drivers/staging/vt6655/hostap.c
index f105c2ac091b..164136b07a68 100644
--- a/drivers/staging/vt6655/hostap.c
+++ b/drivers/staging/vt6655/hostap.c
@@ -350,6 +350,9 @@ static int hostap_set_generic_element(PSDevice pDevice,
 {
 	PSMgmtObject    pMgmt = pDevice->pMgmt;
 
+	if (param->u.generic_elem.len > sizeof(pMgmt->abyWPAIE))
+		return -EINVAL;
+
 	memcpy(pMgmt->abyWPAIE,
 	       param->u.generic_elem.data,
 	       param->u.generic_elem.len