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staging: frontier: use after free in disconnect() 

usb_alphatrack_delete() frees "dev" so we can't use it on that path.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2013-07-22 09:57:49 +03:00 committed by Greg Kroah-Hartman
parent 4b18f08be0
commit c8145c5610
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/frontier/alphatrack.c
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@ -827,11 +827,11 @@ static void usb_alphatrack_disconnect(struct usb_interface *intf)
mutex_unlock(&dev->mtx);
usb_alphatrack_delete(dev);
} else {
atomic_set(&dev->writes_pending, 0);
dev->intf = NULL;
mutex_unlock(&dev->mtx);
}
atomic_set(&dev->writes_pending, 0);
mutex_unlock(&disconnect_mutex);
dev_info(&intf->dev, "Alphatrack Surface #%d now disconnected\n",