This is a note to let you know that I've just added the patch titled

USB: serial: ir-usb: add missing endpoint sanity check

to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From 2988a8ae7476fe9535ab620320790d1714bdad1d Mon Sep 17 00:00:00 2001

From: Johan Hovold johan@kernel.org Date: Wed, 22 Jan 2020 11:15:26 +0100 Subject: USB: serial: ir-usb: add missing endpoint sanity check

Add missing endpoint sanity check to avoid dereferencing a NULL-pointer on open() in case a device lacks a bulk-out endpoint.

Note that prior to commit f4a4cbb2047e ("USB: ir-usb: reimplement using generic framework") the oops would instead happen on open() if the device lacked a bulk-in endpoint and on write() if it lacked a bulk-out endpoint.

Fixes: f4a4cbb2047e ("USB: ir-usb: reimplement using generic framework") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable stable@vger.kernel.org Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Johan Hovold johan@kernel.org --- drivers/usb/serial/ir-usb.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 302eb9530859..c3b06fc5a7f0 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -195,6 +195,9 @@ static int ir_startup(struct usb_serial *serial) struct usb_irda_cs_descriptor *irda_desc; int rates;

+ if (serial->num_bulk_in < 1 || serial->num_bulk_out < 1) + return -ENODEV; + irda_desc = irda_usb_find_class_desc(serial, 0); if (!irda_desc) { dev_err(&serial->dev->dev,