From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:52244 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759303AbdLRNzX (ORCPT ); Mon, 18 Dec 2017 08:55:23 -0500 Subject: Patch "net: wimax/i2400m: fix NULL-deref at probe" has been added to the 4.4-stable tree To: johan@kernel.org, alexander.levin@verizon.com, davem@davemloft.net, gregkh@linuxfoundation.org, inaky@linux.intel.com Cc: , From: Date: Mon, 18 Dec 2017 14:54:31 +0100 Message-ID: <151360527177198@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled net: wimax/i2400m: fix NULL-deref at probe to the 4.4-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: net-wimax-i2400m-fix-null-deref-at-probe.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Mon Dec 18 14:47:43 CET 2017 From: Johan Hovold Date: Mon, 13 Mar 2017 13:42:03 +0100 Subject: net: wimax/i2400m: fix NULL-deref at probe From: Johan Hovold [ Upstream commit 6e526fdff7be4f13b24f929a04c0e9ae6761291e ] Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer or accessing memory beyond the endpoint array should a malicious device lack the expected endpoints. The endpoints are specifically dereferenced in the i2400m_bootrom_init path during probe (e.g. in i2400mu_tx_bulk_out). Fixes: f398e4240fce ("i2400m/USB: probe/disconnect, dev init/shutdown and reset backends") Cc: Inaky Perez-Gonzalez Signed-off-by: Johan Hovold Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/wimax/i2400m/usb.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/wimax/i2400m/usb.c +++ b/drivers/net/wimax/i2400m/usb.c @@ -467,6 +467,9 @@ int i2400mu_probe(struct usb_interface * struct i2400mu *i2400mu; struct usb_device *usb_dev = interface_to_usbdev(iface); + if (iface->cur_altsetting->desc.bNumEndpoints < 4) + return -ENODEV; + if (usb_dev->speed != USB_SPEED_HIGH) dev_err(dev, "device not connected as high speed\n"); Patches currently in stable-queue which might be from johan@kernel.org are queue-4.4/net-wimax-i2400m-fix-null-deref-at-probe.patch