tree f51941f5e983535a964d1e7325bf9c0571c76d96
parent 63fc70bffa16de431a51da7f530011de1b469780
author Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1639072767 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1639477963 +0100

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>