This is a note to let you know that I've just added the patch titled USB: usb_driver_claim_interface: add sanity checking 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: usb-usb_driver_claim_interface-add-sanity-checking.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 <stable@xxxxxxxxxxxxxxx> know about it. >From 0b818e3956fc1ad976bee791eadcbb3b5fec5bfd Mon Sep 17 00:00:00 2001 From: Oliver Neukum <oneukum@xxxxxxxx> Date: Wed, 16 Mar 2016 13:26:17 +0100 Subject: USB: usb_driver_claim_interface: add sanity checking From: Oliver Neukum <oneukum@xxxxxxxx> commit 0b818e3956fc1ad976bee791eadcbb3b5fec5bfd upstream. Attacks that trick drivers into passing a NULL pointer to usb_driver_claim_interface() using forged descriptors are known. This thwarts them by sanity checking. Signed-off-by: Oliver Neukum <ONeukum@xxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/core/driver.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -502,11 +502,15 @@ static int usb_unbind_interface(struct d int usb_driver_claim_interface(struct usb_driver *driver, struct usb_interface *iface, void *priv) { - struct device *dev = &iface->dev; + struct device *dev; struct usb_device *udev; int retval = 0; int lpm_disable_error; + if (!iface) + return -ENODEV; + + dev = &iface->dev; if (dev->driver) return -EBUSY; Patches currently in stable-queue which might be from oneukum@xxxxxxxx are queue-4.4/usb-cdc-acm-more-sanity-checking.patch queue-4.4/usb-mct_u232-add-sanity-checking-in-probe.patch queue-4.4/usb-digi_acceleport-do-sanity-checking-for-the-number-of-ports.patch queue-4.4/usb-cypress_m8-add-endpoint-sanity-check.patch queue-4.4/usb-retry-reset-if-a-device-times-out.patch queue-4.4/usb-hub-fix-a-typo-in-hub_port_init-leading-to-wrong-logic.patch queue-4.4/usb-usb_driver_claim_interface-add-sanity-checking.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html