A xorg-server security update has been released for Debian GNU/Linux 11 to address a buffer overflow in the _getCountedString() function.

DSA 5278-1: xorg-server security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-5278-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
November 13, 2022   https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : xorg-server
CVE ID : CVE-2022-3550 CVE-2022-3551

It was discovered that a buffer overflow in the _getCountedString()
function of the Xorg X server may result in denial of service or
potentially the execution of arbitrary code.

For the stable distribution (bullseye), these problems have been fixed in
version 2:1.20.11-1+deb11u3.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/