- ------------------------------------------------------------------------- Debian LTS Advisory DLA-2869-1 [email protected] https://www.debian.org/lts/security/ Thorsten Alteholz December 29, 2021 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : xorg-server Version : 2:1.19.2-1+deb9u9 CVE ID : CVE-2021-4008 CVE-2021-4009 CVE-2021-4011 Jan-Niklas Sohn discovered that multiple input validation failures in X server extensions of the X.org X server may result in privilege escalation if the X server is running privileged. For Debian 9 stretch, these problems have been fixed in version 2:1.19.2-1+deb9u9. We recommend that you upgrade your xorg-server packages. For the detailed security status of xorg-server please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xorg-server 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