A vulnerability, which was classified as problematic, was found in X.org Server. This affects an unknown part of the file hw/xquartz/X11Controller.m of the component xquartz. The manipulation leads to denial of service. The CWE definition for the vulnerability is CWE-404. The weakness was presented 10/17/2022. The advisory is shared at cgit.freedesktop.org. This vulnerability is uniquely identified as CVE-2022-3553. The attack needs to be done within the local network. Technical details are available. There is no exploit available. The price for an exploit might be around USD $0-$5k at the moment. It is declared as not defined. We expect the 0-day to have been worth approximately $0-$5k. The bugfix is ready for download at cgit.freedesktop.org. It is recommended to apply a patch to fix this issue. A possible mitigation has been published even before and not after the disclosure of the vulnerability.