[PATCH 3.14 103/158] usb: gadget: tcm_usb_gadget: stop format strings

[Greg Kroah-Hartman]

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kees Cook <keescook@xxxxxxxxxxxx>

commit aba37fd975f0dd58e025c99c2a79b61b20190831 upstream.

This makes sure that the name coming out of configfs cannot be used
accidentally as a format string.

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/gadget/tcm_usb_gadget.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -1613,7 +1613,7 @@ static struct se_wwn *usbg_make_tport(
 		return ERR_PTR(-ENOMEM);
 	}
 	tport->tport_wwpn = wwpn;
-	snprintf(tport->tport_name, sizeof(tport->tport_name), wnn_name);
+	snprintf(tport->tport_name, sizeof(tport->tport_name), "%s", wnn_name);
 	return &tport->tport_wwn;
 }
 


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