The cp_report_fixup function in drivers/hid/hid-cypress.c in the Linux kernel 3.2 and 4.x before 4.9.4 allows physically proximate attackers to cause a denial of service (integer underflow) or possibly have unspecified other impact via a crafted HID report.
Exploitability
AV:PAC:LPR:LUI:NScope
S:UImpact
C:HI:HA:H6.6/CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H