xorg: xmayland: Use-after-free in XPresentNotify structure creation

A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: xorg-x11-server (UTSA-2025-984875)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-984875 advisory. A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText allocates a fixed- sized buffer on the stack and copies the names of the virtual...