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             AUSCERT External Security Bulletin Redistribution

            USN-4689-1: NVIDIA graphics drivers vulnerabilities
                              12 January 2021


        AusCERT Security Bulletin Summary

Product:           NVIDIA graphics drivers
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Increased Privileges     -- Existing Account
                   Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-1056 CVE-2021-1053 CVE-2021-1052

Original Bulletin: 

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running NVIDIA graphics drivers check for an updated version of the
         software for their operating system.

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USN-4689-1: NVIDIA graphics drivers vulnerabilities
11 January 2021

Several security issues were fixed in NVIDIA graphics drivers.

  o Ubuntu 20.10
  o Ubuntu 20.04 LTS
  o Ubuntu 18.04 LTS


  o nvidia-graphics-drivers-390 - NVIDIA binary X.Org driver
  o nvidia-graphics-drivers-450 - NVIDIA binary X.Org driver
  o nvidia-graphics-drivers-460 - NVIDIA binary X.Org driver


It was discovered that the NVIDIA GPU display driver for the Linux kernel
contained a vulnerability that allowed user-mode clients to access legacy
privileged APIs. A local attacker could use this to cause a denial of
service or escalate privileges. (CVE-2021-1052)

It was discovered that the NVIDIA GPU display driver for the Linux kernel
did not properly validate a pointer received from userspace in some
situations. A local attacker could use this to cause a denial of service.

Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux
kernel did not properly restrict device-level GPU isolation. A local
attacker could use this to cause a denial of service or possibly expose
sensitive information. (CVE-2021-1056)

Update instructions

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

Ubuntu 20.10

  o xserver-xorg-video-nvidia-390 - 390.141-0ubuntu0.20.10.1
  o xserver-xorg-video-nvidia-440 - 450.102.04-0ubuntu0.20.10.1
  o xserver-xorg-video-nvidia-450 - 450.102.04-0ubuntu0.20.10.1
  o xserver-xorg-video-nvidia-455 - 460.32.03-0ubuntu0.20.10.1
  o xserver-xorg-video-nvidia-460 - 460.32.03-0ubuntu0.20.10.1

Ubuntu 20.04

  o xserver-xorg-video-nvidia-390 - 390.141-0ubuntu0.20.04.1
  o xserver-xorg-video-nvidia-440 - 450.102.04-0ubuntu0.20.04.1
  o xserver-xorg-video-nvidia-450 - 450.102.04-0ubuntu0.20.04.1
  o xserver-xorg-video-nvidia-455 - 460.32.03-0ubuntu0.20.04.1
  o xserver-xorg-video-nvidia-460 - 460.32.03-0ubuntu0.20.04.1

Ubuntu 18.04

  o xserver-xorg-video-nvidia-390 - 390.141-0ubuntu0.18.04.1
  o xserver-xorg-video-nvidia-440 - 450.102.04-0ubuntu0.18.04.1
  o xserver-xorg-video-nvidia-450 - 450.102.04-0ubuntu0.18.04.1
  o xserver-xorg-video-nvidia-455 - 460.32.03-0ubuntu0.18.04.1
  o xserver-xorg-video-nvidia-460 - 460.32.03-0ubuntu0.18.04.1

This update uses a new upstream release, which includes additional
bug fixes. After a standard system update you need to reboot your
computer to make all the necessary changes.


  o CVE-2021-1052
  o CVE-2021-1053
  o CVE-2021-1056

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