This is a note to let you know that I've just added the patch titled uwb: i1480-dfu: fix NULL-deref at probe to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: uwb-i1480-dfu-fix-null-deref-at-probe.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 4ce362711d78a4999011add3115b8f4b0bc25e8c Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan@xxxxxxxxxx> Date: Mon, 13 Mar 2017 13:47:53 +0100 Subject: uwb: i1480-dfu: fix NULL-deref at probe From: Johan Hovold <johan@xxxxxxxxxx> commit 4ce362711d78a4999011add3115b8f4b0bc25e8c upstream. Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Note that the dereference happens in the cmd and wait_init_done callbacks which are called during probe. Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver") Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@xxxxxxxxx> Cc: David Vrabel <david.vrabel@xxxxxxx> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/uwb/i1480/dfu/usb.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/uwb/i1480/dfu/usb.c +++ b/drivers/uwb/i1480/dfu/usb.c @@ -362,6 +362,9 @@ int i1480_usb_probe(struct usb_interface result); } + if (iface->cur_altsetting->desc.bNumEndpoints < 1) + return -ENODEV; + result = -ENOMEM; i1480_usb = kzalloc(sizeof(*i1480_usb), GFP_KERNEL); if (i1480_usb == NULL) { Patches currently in stable-queue which might be from johan@xxxxxxxxxx are queue-4.9/usb-serial-option-add-quectel-uc15-uc20-ec21-and-ec25-modems.patch queue-4.9/input-ims-pcu-validate-number-of-endpoints-before-using-them.patch queue-4.9/usb-usbtmc-add-missing-endpoint-sanity-check.patch queue-4.9/input-cm109-validate-number-of-endpoints-before-using-them.patch queue-4.9/input-iforce-validate-number-of-endpoints-before-using-them.patch queue-4.9/mmc-ushc-fix-null-deref-at-probe.patch queue-4.9/input-kbtab-validate-number-of-endpoints-before-using-them.patch queue-4.9/usb-usbtmc-fix-probe-error-path.patch queue-4.9/input-sur40-validate-number-of-endpoints-before-using-them.patch queue-4.9/uwb-i1480-dfu-fix-null-deref-at-probe.patch queue-4.9/input-hanwang-validate-number-of-endpoints-before-using-them.patch queue-4.9/usb-idmouse-fix-null-deref-at-probe.patch queue-4.9/uwb-hwa-rc-fix-null-deref-at-probe.patch queue-4.9/usb-lvtest-fix-null-deref-at-probe.patch queue-4.9/input-yealink-validate-number-of-endpoints-before-using-them.patch queue-4.9/usb-serial-qcserial-add-dell-dw5811e.patch queue-4.9/usb-uss720-fix-null-deref-at-probe.patch queue-4.9/usb-wusbcore-fix-null-deref-at-probe.patch