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

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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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Masakazu Mokuno 2017-11-10 01:25:50 +09:00 • committed by Greg Kroah-Hartman

parent 1d5a31582e

commit 81cf4a4536

2 changed files with 27 additions and 4 deletions

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28

drivers/usb/core/config.c

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3

include/uapi/linux/usb/ch9.h

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