A Mesa security update has been released for Ubuntu Linux 19.10 and 18.04 LTS.

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Ubuntu Security Notice USN-4271-1
February 06, 2020

mesa vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS

Summary:

Mesa could be made to expose sensitive information.

Software Description:
- mesa: free implementation of the EGL API

Details:

Tim Brown discovered that Mesa incorrectly handled shared memory
permissions. A local attacker could use this issue to obtain and possibly
alter sensitive information belonging to another user.

Update instructions:

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

Ubuntu 19.10:
libd3dadapter9-mesa 19.2.8-0ubuntu0~19.10.2
libegl-mesa0 19.2.8-0ubuntu0~19.10.2
libegl1-mesa 19.2.8-0ubuntu0~19.10.2
libgbm1 19.2.8-0ubuntu0~19.10.2
libgl1-mesa-dri 19.2.8-0ubuntu0~19.10.2
libgl1-mesa-glx 19.2.8-0ubuntu0~19.10.2
libglapi-mesa 19.2.8-0ubuntu0~19.10.2
libgles2-mesa 19.2.8-0ubuntu0~19.10.2
libglx-mesa0 19.2.8-0ubuntu0~19.10.2
libosmesa6 19.2.8-0ubuntu0~19.10.2
libwayland-egl1-mesa 19.2.8-0ubuntu0~19.10.2
libxatracker2 19.2.8-0ubuntu0~19.10.2
mesa-opencl-icd 19.2.8-0ubuntu0~19.10.2
mesa-va-drivers 19.2.8-0ubuntu0~19.10.2
mesa-vdpau-drivers 19.2.8-0ubuntu0~19.10.2
mesa-vulkan-drivers 19.2.8-0ubuntu0~19.10.2

Ubuntu 18.04 LTS:
libd3dadapter9-mesa 19.2.8-0ubuntu0~18.04.2
libegl-mesa0 19.2.8-0ubuntu0~18.04.2
libegl1-mesa 19.2.8-0ubuntu0~18.04.2
libgbm1 19.2.8-0ubuntu0~18.04.2
libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.2
libgl1-mesa-glx 19.2.8-0ubuntu0~18.04.2
libglapi-mesa 19.2.8-0ubuntu0~18.04.2
libgles2-mesa 19.2.8-0ubuntu0~18.04.2
libglx-mesa0 19.2.8-0ubuntu0~18.04.2
libosmesa6 19.2.8-0ubuntu0~18.04.2
libwayland-egl1-mesa 19.2.8-0ubuntu0~18.04.2
libxatracker2 19.2.8-0ubuntu0~18.04.2
mesa-opencl-icd 19.2.8-0ubuntu0~18.04.2
mesa-va-drivers 19.2.8-0ubuntu0~18.04.2
mesa-vdpau-drivers 19.2.8-0ubuntu0~18.04.2
mesa-vulkan-drivers 19.2.8-0ubuntu0~18.04.2

After a standard system update you need to restart your session to make
all the necessary changes.

References:
  https://usn.ubuntu.com/4271-1
CVE-2019-5068

Package Information:
  https://launchpad.net/ubuntu/+source/mesa/19.2.8-0ubuntu0~19.10.2
  https://launchpad.net/ubuntu/+source/mesa/19.2.8-0ubuntu0~18.04.2