Several vulnerabilities were discovered in the Xorg X server, which may result in privilege escalation if the X server is running privileged. For the stable distribution (trixie), these problems have been fixed in version 2:21.1.16-1.3+deb13u3. We recommend that you upgrade your xorg-server packages.

Source: Debian xorg-server Critical Privilege Escalation Vulnerability DSA-6370-1