X.Org advisory: multiple flaws in the X server and Xwayland fixed in October 2026

The X.Org advisory, dated 7 October 2026 and posted to the oss-sec list by Peter Hutterer on 6 October, covers several problems found in the X server and Xwayland implementations published by the project. For the X server, the indicated fix is version xorg-server-21.1.25; for Xwayland, version xwayland-24.1.14. The text available in the feed is an automatic translation and is truncated, so this summary does not list each flaw, identifier or individual impact. Teams that run Linux workstations and graphical systems should check the installed X server and Xwayland versions and apply the updates supplied by their distribution. To check the details, read the original advisory on the oss-sec list, at the address given in the feed, and your distribution's notices.