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(parent: 42bf399) | 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)
commit0c907a0f276e9ee57d30e14a7335d413eee7d7ac
treea56722a96e98ca8a62d488219c7655a05acf412dtree | snapshot
parent42bf399b55bb6cd390bb662e4134dbb2aa926a3fcommit | 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
Linux Kernel Source Tree.