The mct_u232_msr_to_state function in drivers/usb/serial/mct_u232.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 crafted USB device without two interrupt-in endpoint descriptors.
Exploitability
AV:PAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:H4.6/CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H