Fedora 38 To Prohibit Byte Swapped Xorg and Xwayland Clients
The Xorg and Xwayland implementation of this feature has gone largely untested, the number of Fedora users that use it are virtually zero, and considering the number of attack vectors this has presented historically, setting the default to deny clients that require this seems the better way to do.
This change will be to the xorg-x11-server and xorg-x11-server-Xwayland packages and those needing the feature turned back will need to add “AllowSwappedClients” “on” to their xorg.conf.d file in the “ServerFlags” section. Xwayland users will need to pass the +byteswappedclients flag, however, the compositor will need to be able to handle this flag which at this time GNOME does not.
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