[PATCH 3.8 070/133] usb: gadget: tcm_usb_gadget: stop format strings

[Kamal Mostafa]

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

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

From: Kees Cook <keescook at chromium.org>

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 at chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/usb/gadget/tcm_usb_gadget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c
index 7cacd6a..e4d8d79 100644
--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -1614,7 +1614,7 @@ 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;
 }
 
-- 
1.9.1