A xorg-server-xwayland security update has been released for Slackware Linux 15.0.

slackware-security: Slackware 15.0 xorg-server-xwayland (SSA:2022-271-01)

[slackware-security] Slackware 15.0 xorg-server-xwayland (SSA:2022-271-01)

New xorg-server-xwayland packages are available for Slackware 15.0
to fix security issues.

Here are the details from the Slackware 15.0 ChangeLog:
+--------------------------+
patches/packages/xorg-server-xwayland-21.1.4-i586-2_slack15.0.txz: Rebuilt.
xkb: switch to array index loops to moving pointers.
xkb: add request length validation for XkbSetGeometry.
xkb: swap XkbSetDeviceInfo and XkbSetDeviceInfoCheck.
I hadn't realized that the xorg-server patches were needed (or applied
cleanly) to Xwayland. Thanks to LuckyCyborg for the kind reminder. :-)
For more information, see:
  https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2319
  https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2320
(* Security fix *)
+--------------------------+

Where to find the new packages:
+-----------------------------+

Thanks to the friendly folks at the OSU Open Source Lab
(  http://osuosl.org) for donating FTP and rsync hosting
to the Slackware project! :-)

Also see the "Get Slack" section on   http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 15.0:
  ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xwayland-21.1.4-i586-2_slack15.0.txz

Updated package for Slackware x86_64 15.0:
  ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xwayland-21.1.4-x86_64-2_slack15.0.txz

MD5 signatures:
+-------------+

Slackware 15.0 package:
3f8e6a5aba6c25022cde165365f64e19 xorg-server-xwayland-21.1.4-i586-2_slack15.0.txz

Slackware x86_64 15.0 package:
dae5edb2843e0724a7d3e43e108cfe87 xorg-server-xwayland-21.1.4-x86_64-2_slack15.0.txz

Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg xorg-server-xwayland-21.1.4-i586-2_slack15.0.txz

+------------------------------------------------------------------------+