diff --git a/drivers/usb/gadget/function/f_generic.c b/drivers/usb/gadget/function/f_generic.c
index b361f64c2b7db2c573f79c7ce1ffd956c9592924..6da877cbfe9bff81fa7193c71e4385592d88fd9f 100644
--- a/drivers/usb/gadget/function/f_generic.c
+++ b/drivers/usb/gadget/function/f_generic.c
@@ -1472,6 +1472,9 @@ static long usbfn_ioctl(struct file *file, unsigned int cmd, unsigned long value
                 return (-ENOMEM);
             }
 
+            if (newfn.nameLen > MAX_NAMELEN) {
+                return -EPERM;
+            }
             memcpy(ffs->dev_name, newfn.name, newfn.nameLen);
             
             if (unlikely(!ffs->dev_name)) {