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Ubuntu Security Notice USN-4404-1
June 25, 2020

nvidia-graphics-drivers-390, nvidia-graphics-drivers-440 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in NVIDIA graphics drivers.

Software Description:
- nvidia-graphics-drivers-390: NVIDIA binary X.Org driver
- nvidia-graphics-drivers-440: NVIDIA binary X.Org driver

Details:

Thomas E. Carroll discovered that the NVIDIA Cuda grpahics driver did not
properly perform access control when performing IPC. An attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2020-5963)

It was discovered that the UVM driver in the NVIDIA graphics driver
contained a race condition. A local attacker could use this to cause a
denial of service. (CVE-2020-5967)

It was discovered that the NVIDIA virtual GPU guest drivers contained
an unspecified vulnerability that could potentially lead to privileged
operation execution. An attacker could use this to cause a denial of
service. (CVE-2020-5973)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
  xserver-xorg-video-nvidia-390   390.138-0ubuntu0.20.04.1
  xserver-xorg-video-nvidia-440   440.100-0ubuntu0.20.04.1

Ubuntu 19.10:
  xserver-xorg-video-nvidia-390   390.138-0ubuntu0.19.10.1
  xserver-xorg-video-nvidia-440   440.100-0ubuntu0.19.10.1

Ubuntu 18.04 LTS:
  xserver-xorg-video-nvidia-390   390.138-0ubuntu0.18.04.1
  xserver-xorg-video-nvidia-440   440.100-0ubuntu0.18.04.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://usn.ubuntu.com/4404-1
  CVE-2020-5963, CVE-2020-5967, CVE-2020-5973

Package Information:
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/390.138-0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-440/440.100-0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/390.138-0ubuntu0.19.10.1
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-440/440.100-0ubuntu0.19.10.1
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390/390.138-0ubuntu0.18.04.1
  https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-440/440.100-0ubuntu0.18.04.1