[PATCH 0/4] USB: fix NULL-deref and alternate settings bugs

From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org, Johan Hovold <johan@kernel.org>
Subject: [PATCH 0/4] USB: fix NULL-deref and alternate settings bugs
Date: Tue, 10 Dec 2019 12:25:57 +0100	[thread overview]
Message-ID: <20191210112601.3561-1-johan@kernel.org> (raw)

I stumbled over a couple potential NULL-pointer dereferences due to
drivers using the first altsetting instead of the current one when doing
descriptor sanity checks.

Turns out we have a quite a few drivers getting this wrong even if this
would mostly be an issue on kernels with panic_on_warn set due to the
WARN() in usb_submit_urb().

Since we've started backporting fixes for such warnings (e.g. as
reported by syzbot), I've marked these for stable as well.

Johan

Johan Hovold (4):
  USB: atm: ueagle-atm: add missing endpoint check
  USB: adutux: fix interface sanity check
  USB: idmouse: fix interface sanity checks
  USB: serial: io_edgeport: fix epic endpoint lookup

 drivers/usb/atm/ueagle-atm.c     | 18 ++++++++++++------
 drivers/usb/misc/adutux.c        |  2 +-
 drivers/usb/misc/idmouse.c       |  2 +-
 drivers/usb/serial/io_edgeport.c | 10 ++++++----
 4 files changed, 20 insertions(+), 12 deletions(-)

-- 
2.24.0