[PATCH 3.18 147/183] usb: gadget: gadgetfs: Free memory allocated by memdup_user()

[Greg Kroah-Hartman]

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

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

From: Mario Schuknecht <mario.schuknecht@xxxxxxxxxxxxxxx>

commit b44be2462dbe3e23f0aedff64de52a1e8e47a1cd upstream.

Commit 3b74c73f8d6f053f422e85fce955b61fb181cfe7 switched over to memdup_user()
in ep_write() function and removed kfree (kbuf).
memdup_user() function allocates memory which is never freed.

Fixes: 3b74c73 (usb: gadget: inode: switch over to memdup_user())
Signed-off-by: Mario Schuknecht <mario.schuknecht@xxxxxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/gadget/legacy/inode.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -449,6 +449,7 @@ ep_write (struct file *fd, const char __
 		data->name, len, (int) value);
 free1:
 	mutex_unlock(&data->lock);
+	kfree (kbuf);
 	return value;
 }
 


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