This is a note to let you know that I've just added the patch titled
USB: serial: console: fix use-after-free after failed setup
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-serial-console-fix-use-after-free-after-failed-setup.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 299d7572e46f98534033a9e65973f13ad1ce9047 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Wed, 4 Oct 2017 11:01:13 +0200
Subject: USB: serial: console: fix use-after-free after failed setup
From: Johan Hovold <johan@xxxxxxxxxx>
commit 299d7572e46f98534033a9e65973f13ad1ce9047 upstream.
Make sure to reset the USB-console port pointer when console setup fails
in order to avoid having the struct usb_serial be prematurely freed by
the console code when the device is later disconnected.
Fixes: 73e487fdb75f ("[PATCH] USB console: fix disconnection issues")
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/console.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -186,6 +186,7 @@ static int usb_console_setup(struct cons
tty_kref_put(tty);
reset_open_count:
port->port.count = 0;
+ info->port = NULL;
usb_autopm_put_interface(serial->interface);
error_get_interface:
usb_serial_put(serial);
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-4.9/alsa-caiaq-fix-stray-urb-at-probe-error-path.patch
queue-4.9/usb-serial-option-add-support-for-tp-link-lte-module.patch
queue-4.9/usb-serial-cp210x-add-support-for-elv-tfd500.patch
queue-4.9/usb-serial-qcserial-add-dell-dw5818-dw5819.patch
queue-4.9/usb-serial-console-fix-use-after-free-after-failed-setup.patch
queue-4.9/usb-serial-ftdi_sio-add-id-for-cypress-wiced-dev-board.patch