mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-29 01:16:26 -05:00
54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
From 7a17891b0194ba11f7ee15a18e545808b0d27495 Mon Sep 17 00:00:00 2001
|
|
From: Badhri Jagan Sridharan <Badhri@google.com>
|
|
Date: Mon, 29 Aug 2016 17:33:52 -0700
|
|
Subject: UPSTREAM: USB: cypress_m8: add endpoint sanity check
|
|
|
|
commit c55aee1bf0e6b6feec8b2927b43f7a09a6d5f754 upstream.
|
|
|
|
An attack using missing endpoints exists.
|
|
|
|
CVE-2016-3137
|
|
|
|
BUG: 28242610
|
|
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
|
|
Signed-off-by: Johan Hovold <johan@kernel.org>
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
|
|
Change-Id: I1cc7957a5924175d24f12fdc41162ece67c907e5
|
|
---
|
|
drivers/usb/serial/cypress_m8.c | 11 +++++------
|
|
1 file changed, 5 insertions(+), 6 deletions(-)
|
|
|
|
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
|
|
index 08212019..09f0f63 100644
|
|
--- a/drivers/usb/serial/cypress_m8.c
|
|
+++ b/drivers/usb/serial/cypress_m8.c
|
|
@@ -449,6 +449,11 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
|
|
struct usb_serial *serial = port->serial;
|
|
struct cypress_private *priv;
|
|
|
|
+ if (!port->interrupt_out_urb || !port->interrupt_in_urb) {
|
|
+ dev_err(&port->dev, "required endpoint is missing\n");
|
|
+ return -ENODEV;
|
|
+ }
|
|
+
|
|
priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
@@ -606,12 +611,6 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
cypress_set_termios(tty, port, &priv->tmp_termios);
|
|
|
|
/* setup the port and start reading from the device */
|
|
- if (!port->interrupt_in_urb) {
|
|
- dev_err(&port->dev, "%s - interrupt_in_urb is empty!\n",
|
|
- __func__);
|
|
- return -1;
|
|
- }
|
|
-
|
|
usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
|
|
usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress),
|
|
port->interrupt_in_urb->transfer_buffer,
|
|
--
|
|
cgit v1.1
|
|
|