This is a note to let you know that I've just added the patch titled

usb: usbtest: fix NULL pointer dereference

to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: usb-usbtest-fix-null-pointer-dereference.patch and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 7c80f9e4a588f1925b07134bb2e3689335f6c6d8 Mon Sep 17 00:00:00 2001

From: Alan Stern stern@rowland.harvard.edu Date: Fri, 29 Sep 2017 10:54:24 -0400 Subject: usb: usbtest: fix NULL pointer dereference

From: Alan Stern stern@rowland.harvard.edu

commit 7c80f9e4a588f1925b07134bb2e3689335f6c6d8 upstream.

If the usbtest driver encounters a device with an IN bulk endpoint but no OUT bulk endpoint, it will try to dereference a NULL pointer (out->desc.bEndpointAddress). The problem can be solved by adding a missing test.

Signed-off-by: Alan Stern stern@rowland.harvard.edu Reported-by: Andrey Konovalov andreyknvl@google.com Tested-by: Andrey Konovalov andreyknvl@google.com Signed-off-by: Felipe Balbi felipe.balbi@linux.intel.com Cc: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/misc/usbtest.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -183,12 +183,13 @@ found: return tmp; }

- if (in) { + if (in) dev->in_pipe = usb_rcvbulkpipe(udev, in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + if (out) dev->out_pipe = usb_sndbulkpipe(udev, out->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); - } + if (iso_in) { dev->iso_in = &iso_in->desc; dev->in_iso_pipe = usb_rcvisocpipe(udev,

Patches currently in stable-queue which might be from stern@rowland.harvard.edu are

queue-3.18/usb-usbtest-fix-null-pointer-dereference.patch