From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51169 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755940AbcCaQ3O (ORCPT ); Thu, 31 Mar 2016 12:29:14 -0400 Subject: patch "USB: digi_acceleport: do sanity checking for the number of ports" added to usb-linus To: oneukum@suse.com, ONeukum@suse.com, gregkh@linuxfoundation.org, johan@kernel.org, stable@vger.kernel.org From: Date: Thu, 31 Mar 2016 09:29:05 -0700 Message-ID: <145944174525101@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled USB: digi_acceleport: do sanity checking for the number of ports to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >>From 5a07975ad0a36708c6b0a5b9fea1ff811d0b0c1f Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 31 Mar 2016 12:04:26 -0400 Subject: USB: digi_acceleport: do sanity checking for the number of ports The driver can be crashed with devices that expose crafted descriptors with too few endpoints. See: http://seclists.org/bugtraq/2016/Mar/61 Signed-off-by: Oliver Neukum [johan: fix OOB endpoint check and add error messages ] Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/digi_acceleport.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 010a42a92688..16e8e37b3b36 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -1251,8 +1251,27 @@ static int digi_port_init(struct usb_serial_port *port, unsigned port_num) static int digi_startup(struct usb_serial *serial) { + struct device *dev = &serial->interface->dev; struct digi_serial *serial_priv; int ret; + int i; + + /* check whether the device has the expected number of endpoints */ + if (serial->num_port_pointers < serial->type->num_ports + 1) { + dev_err(dev, "OOB endpoints missing\n"); + return -ENODEV; + } + + for (i = 0; i < serial->type->num_ports + 1 ; i++) { + if (!serial->port[i]->read_urb) { + dev_err(dev, "bulk-in endpoint missing\n"); + return -ENODEV; + } + if (!serial->port[i]->write_urb) { + dev_err(dev, "bulk-out endpoint missing\n"); + return -ENODEV; + } + } serial_priv = kzalloc(sizeof(*serial_priv), GFP_KERNEL); if (!serial_priv) -- 2.7.4