Debian: DSA-5285-1 Critical: Systemd Privilege Escalation Vulnerability

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/source-package/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/