A recently discovered security issue affects both the nvidia-graphics-drivers-304 and nvidia-graphics-drivers-340 proprietary graphics drivers available on the official repos of the Ubuntu 12.04 LTS (Precise Pangolin), Ubuntu 14.04 LTS (Trusty Tahr), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 16.10 (Yakkety Yak) operating systems. According to a recent security notice published by Canonical, it would appear that the Nvidia graphics drivers could be made to crash by a local attacker, under certain conditions, due to a flaw in the kernel mode layer. The attacker could exploit the security vulnerability to cause a denial of service (DoS) attack.