For the NVIDIA Quadro, NVS, and GeForce products, NVIDIA Windows GPU Display Driver R340 before 342.00 and R375 before 375.63 contains a vulnerability in the kernel mode layer (nvlddmkm.sys) handler for DxgDdiEscape ID 0x7000194 where a value passed from a user to the driver is used without validation as the index to an internal array, leading to denial of service or potential escalation of privileges.
https://www.exploit-db.com/exploits/40658/
https://support.lenovo.com/us/en/solutions/LEN-10822