USB: gadget: validate interface OS descriptor requests
authorSzymon Heidrich <szymon.heidrich@gmail.com>
Mon, 24 Jan 2022 11:14:00 +0000 (12:14 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Feb 2022 11:52:52 +0000 (12:52 +0100)
commit38fd68f55a7ef57fb9cc3102ac65d1ac474a1a18
treed383eefaa81259029b112cbe0724f4fc5d57e1ea
parent3054dfef06a7f400cf8140fb1c7bd94c545256e1
USB: gadget: validate interface OS descriptor requests

commit 75e5b4849b81e19e9efe1654b30d7f3151c33c2c upstream.

Stall the control endpoint in case provided index exceeds array size of
MAX_CONFIG_INTERFACES or when the retrieved function pointer is null.

Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/gadget/composite.c