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X.org Security Advisory: multiple security issues X.Org X server and Xwayland


Fourdan ofourdan at redhat.com Tue Oct 28 13:22:18 UTC 2025 ====================================================================== X.Org Security Advisory: October 28, 2025 Issues in X.Org X server prior to 21.1.18 and Xwayland prior to 24.1.8 ====================================================================== Multiple issues have been found in the X server and Xwayland implementations published by X.Org for which we are releasing security fixes for in xorg-server-21.1.19 and xwayland-24.1.9. 1) CVE-2025-62229: Use-after-free in XPresentNotify structures creation Using the X11 Present extension, when processing and adding the notifications after presenting a pixmap, if an error occurs, a dangling pointer may be left in the error code path of the function causing a use-after-free when eventually destroying the notification structures later.

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