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(parent: 7faac19) | patch
USB: gadget: detect too-big endpoint 0 requests
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 9 Dec 2021 17:59:27 +0000 (18:59 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 12 Dec 2021 12:04:03 +0000 (13:04 +0100)
commit153a2d7e3350cc89d406ba2d35be8793a64c2038
treea56722a96e98ca8a62d488219c7655a05acf412dtree | snapshot
parent7faac1953ed1f658f719cdf7bb7303fa5eef822ccommit | diff
USB: gadget: detect too-big endpoint 0 requests

Sometimes USB hosts can ask for buffers that are too large from endpoint
0, which should not be allowed.  If this happens for OUT requests, stall
the endpoint, but for IN requests, trim the request size to the endpoint
buffer size.

Co-developed-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/composite.c diff | blob | history
drivers/usb/gadget/legacy/dbgp.c diff | blob | history
drivers/usb/gadget/legacy/inode.c diff | blob | history
Domain: System / Kernel;