USB: core: Add type-specific length check of BOS descriptors

USB: core: Add type-specific length check of BOS descriptors

commit 81cf4a45360f70528f1f64ba018d61cb5767249a upstream.

As most of BOS descriptors are longer in length than their header
'struct usb_dev_cap_header', comparing solely with it is not sufficient
to avoid out-of-bounds access to BOS descriptors.

This patch adds descriptor type specific length check in
usb_get_bos_descriptor() to fix the issue.

Signed-off-by: Masakazu Mokuno <masakazu.mokuno@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16: drop handling of USB_PTM_CAP_TYPE and USB_SSP_CAP_TYPE]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
[sw0312.kim: cherry-pick from linux-3.16.y to fix usb issue related with CVE-2017-16531]
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Change-Id: Id446c97db292f11c48895b95e756bb0c7104a43b