The NVIDIA Display Driver R304 before 309.08, R340 before 341.44, R343 before 345.20, and R346 before 347.52 does not properly validate local client impersonation levels when performing a "kernel administrator check," which allows local users to gain administrator privileges via unspecified API calls.

The NVIDIA Linux Discrete GPU drivers before R304.125, R331.x before R331.113, R340.x before R340.65, R343.x before R343.36, and R346.x before R346.22, Linux for Tegra (L4T) driver before R21.2, and Chrome OS driver before R40 allows remote attackers to cause a denial of service (segmentation fault and X server crash) or possibly execute arbitrary code via a crafted GLX indirect rendering protocol request.