Home / mailings [slackware-security] xorg-server (SSA:2026-189-03)
Posted on 09 July 2026
Slackware Security[slackware-security] xorg-server (SSA:2026-189-03)
New xorg-server packages are available for Slackware 15.0 and -current to
fix security issues.
Here are the details from the Slackware 15.0 ChangeLog:
+--------------------------+
patches/packages/xorg-server-1.20.14-i586-21_slack15.0.txz: Rebuilt.
This update fixes security issues:
glamor Font Atlas Heap Buffer Overflow.
GLX contextTags Use-After-Free in CommonMakeCurrent().
For more information, see:
https://lists.x.org/archives/xorg/2026-July/062255.html
https://www.cve.org/CVERecord?id=CVE-2026-55999
https://www.cve.org/CVERecord?id=CVE-2026-56000
(* Security fix *)
patches/packages/xorg-server-xephyr-1.20.14-i586-21_slack15.0.txz: Rebuilt.
patches/packages/xorg-server-xnest-1.20.14-i586-21_slack15.0.txz: Rebuilt.
patches/packages/xorg-server-xvfb-1.20.14-i586-21_slack15.0.txz: Rebuilt.
patches/packages/xorg-server-xwayland-21.1.4-i586-19_slack15.0.txz: Rebuilt.
This update fixes security issues:
glamor Font Atlas Heap Buffer Overflow.
GLX contextTags Use-After-Free in CommonMakeCurrent().
For more information, see:
https://lists.x.org/archives/xorg/2026-July/062255.html
https://www.cve.org/CVERecord?id=CVE-2026-55999
https://www.cve.org/CVERecord?id=CVE-2026-56000
(* 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-1.20.14-i586-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xephyr-1.20.14-i586-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xnest-1.20.14-i586-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xvfb-1.20.14-i586-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xwayland-21.1.4-i586-19_slack15.0.txz
Updated package for Slackware x86_64 15.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-1.20.14-x86_64-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xephyr-1.20.14-x86_64-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xnest-1.20.14-x86_64-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xvfb-1.20.14-x86_64-21_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xwayland-21.1.4-x86_64-19_slack15.0.txz
Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-21.1.24-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xephyr-21.1.24-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xnest-21.1.24-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xvfb-21.1.24-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xwayland-24.1.13-i686-1.txz
Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-21.1.24-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xephyr-21.1.24-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xnest-21.1.24-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xvfb-21.1.24-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xwayland-24.1.13-x86_64-1.txz
MD5 signatures:
+-------------+
Slackware 15.0 package:
8ee8e09c8bf7ad2f7736e0b3a34526fa xorg-server-1.20.14-i586-21_slack15.0.txz
9445a8151fcef066aab50f6889d9020e xorg-server-xephyr-1.20.14-i586-21_slack15.0.txz
3410bdb7f3dad90a39739ff1f6eeac31 xorg-server-xnest-1.20.14-i586-21_slack15.0.txz
478ab900a8bf22df2ef173cfdefbabbb xorg-server-xvfb-1.20.14-i586-21_slack15.0.txz
a132025f9509f12a96a8b374ed257496 xorg-server-xwayland-21.1.4-i586-19_slack15.0.txz
Slackware x86_64 15.0 package:
1c85ac7c5d1033fc41354b33fe18bdcd xorg-server-1.20.14-x86_64-21_slack15.0.txz
5f03471488a9b6bf826b9ab1bdc2d4c2 xorg-server-xephyr-1.20.14-x86_64-21_slack15.0.txz
4d5bc9fcf635f9bc0dccdf11da884afc xorg-server-xnest-1.20.14-x86_64-21_slack15.0.txz
17a79b491be51e4730ae417116cc51d2 xorg-server-xvfb-1.20.14-x86_64-21_slack15.0.txz
a150bb8ba91cf5c9013602ef583cc120 xorg-server-xwayland-21.1.4-x86_64-19_slack15.0.txz
Slackware -current package:
3a6b1e86333ef9653b4982d653d5d8b7 x/xorg-server-21.1.24-i686-1.txz
17b3c4516dff4c42231a1b2eeca9fbdc x/xorg-server-xephyr-21.1.24-i686-1.txz
c998ffd8de120deec1dcfd12117d3bbb x/xorg-server-xnest-21.1.24-i686-1.txz
590199de49ccdb9e55bfe323996e4178 x/xorg-server-xvfb-21.1.24-i686-1.txz
d0b18dca7a226e9a606c8e199c5b0b15 x/xorg-server-xwayland-24.1.13-i686-1.txz
Slackware x86_64 -current package:
9eb2c4a86ccaff313b51b2be39d443b1 x/xorg-server-21.1.24-x86_64-1.txz
744a967005e978277b9638bf6b6b5acf x/xorg-server-xephyr-21.1.24-x86_64-1.txz
eb49ee6f09618a0649d6e75e81499fa9 x/xorg-server-xnest-21.1.24-x86_64-1.txz
b216eac69f4f7dac6e521e4be4904171 x/xorg-server-xvfb-21.1.24-x86_64-1.txz
193b4f96655202b5002bbfbcde68975b x/xorg-server-xwayland-24.1.13-x86_64-1.txz
Installation instructions:
+------------------------+
Upgrade the package as root:
# upgradepkg xorg-server-*.txz
+-----+
Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com
