Debian Security Advisory
DLA-2869-1 xorg-server -- LTS security update
- Date Reported:
- 29 Dec 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2021-4008, CVE-2021-4009, CVE-2021-4011.
- More information:
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