In change_port_settings in drivers/usb/serial/io_ti.c in the Linux kernel before 4.11.3, local users could cause a denial of service by division-by-zero in the serial device layer by trying to set very high baud rates.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6aeb75e6adfaed16e58780309613a578fe1ee90b
www.securityfocus.com/bid/106802
bugzilla.suse.com/show_bug.cgi?id=1123706
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
github.com/torvalds/linux/commit/6aeb75e6adfaed16e58780309613a578fe1ee90b
usn.ubuntu.com/3933-1/
usn.ubuntu.com/3933-2/