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(parent: 63fc70b) | 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>
Tue, 14 Dec 2021 10:32:43 +0000 (11:32 +0100)
commit7193ad3e50e596ac2192531c58ba83b9e6d2444b
treef51941f5e983535a964d1e7325bf9c0571c76d96tree
parent63fc70bffa16de431a51da7f530011de1b469780commit | diff
USB: gadget: detect too-big endpoint 0 requests

commit 153a2d7e3350cc89d406ba2d35be8793a64c2038 upstream.

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 | blame | history
drivers/usb/gadget/legacy/dbgp.c diff | blob | blame | history
drivers/usb/gadget/legacy/inode.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)