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

USB: usbfs: Filter flags passed in from user space

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: usb-usbfs-filter-flags-passed-in-from-user-space.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 446f666da9f019ce2ffd03800995487e79a91462 Mon Sep 17 00:00:00 2001

From: Oliver Neukum oneukum@suse.com Date: Thu, 23 Nov 2017 16:39:52 +0100 Subject: USB: usbfs: Filter flags passed in from user space

From: Oliver Neukum oneukum@suse.com

commit 446f666da9f019ce2ffd03800995487e79a91462 upstream.

USBDEVFS_URB_ISO_ASAP must be accepted only for ISO endpoints. Improve sanity checking.

Reported-by: Andrey Konovalov andreyknvl@google.com Signed-off-by: Oliver Neukum oneukum@suse.com Acked-by: Alan Stern stern@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/usb/core/devio.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)

--- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1455,14 +1455,18 @@ static int proc_do_submiturb(struct usb_ int number_of_packets = 0; unsigned int stream_id = 0; void *buf; - - if (uurb->flags & ~(USBDEVFS_URB_ISO_ASAP | - USBDEVFS_URB_SHORT_NOT_OK | + unsigned long mask = USBDEVFS_URB_SHORT_NOT_OK | USBDEVFS_URB_BULK_CONTINUATION | USBDEVFS_URB_NO_FSBR | USBDEVFS_URB_ZERO_PACKET | - USBDEVFS_URB_NO_INTERRUPT)) - return -EINVAL; + USBDEVFS_URB_NO_INTERRUPT; + /* USBDEVFS_URB_ISO_ASAP is a special case */ + if (uurb->type == USBDEVFS_URB_TYPE_ISO) + mask |= USBDEVFS_URB_ISO_ASAP; + + if (uurb->flags & ~mask) + return -EINVAL; + if ((unsigned int)uurb->buffer_length >= USBFS_XFER_MAX) return -EINVAL; if (uurb->buffer_length > 0 && !uurb->buffer)

Patches currently in stable-queue which might be from oneukum@suse.com are

queue-4.14/usb-usbfs-filter-flags-passed-in-from-user-space.patch