You should update your NVidia drivers ASAP, these are serious vulnerabilities. http://www.securityweek.com/nvidia-patches-several-flaws-gpu-display-drivers
Lovely. I just got the last Nvidia GeForce update sneaked on here not a week ago via Windows Update. Twice. This looks pretty ominous, though. Thank you, this article also contained a Lenovo advisory I needed to access. At least one of my machines is affected.