A mesa security update has been released for Debian GNU/Linux 8 LTS to address a shared memory permissions vulnerability in the Mesa 3D graphics library.

Package : mesa
Version : 10.3.2-1+deb8u2
CVE ID : CVE-2019-5068
Debian Bug : 944298

Tim Brown discovered a shared memory permissions vulnerability in the
Mesa 3D graphics library. Some Mesa X11 drivers use shared-memory
XImages to implement back buffers for improved performance, but Mesa
creates shared memory regions with permission mode 0777. An attacker
can access the shared memory without any specific permissions.

For Debian 8 "Jessie", this problem has been fixed in version
10.3.2-1+deb8u2.

We recommend that you upgrade your mesa packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS