The acm_probe function in drivers/usb/class/cdc-acm.c in the Linux kernel before 4.5.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a USB device without both a control and a data endpoint descriptor.
https://github.com/torvalds/linux/commit/8835ba4a39cf53f705417b3b3a94eb067673f2c9
https://bugzilla.redhat.com/show_bug.cgi?id=1316204
http://www.ubuntu.com/usn/USN-2997-1
http://www.ubuntu.com/usn/USN-2996-1
http://www.ubuntu.com/usn/USN-2971-3
http://www.ubuntu.com/usn/USN-2971-2
http://www.ubuntu.com/usn/USN-2971-1
http://www.ubuntu.com/usn/USN-2970-1
http://www.ubuntu.com/usn/USN-2969-1
http://www.ubuntu.com/usn/USN-2968-2
http://www.ubuntu.com/usn/USN-2968-1
http://www.openwall.com/lists/oss-security/2016/03/14/4
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.1
http://www.debian.org/security/2016/dsa-3607
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00060.html