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[slackware-security]  xorg-server (SSA:2026-154-04)

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-i586-20_slack15.0.txz:  Rebuilt.
  This update fixes security issues:
  Font Alias Stack-based Buffer Overflow.
  XSYNC Use-After-Free in miSyncDestroyFence().
  XKB Key Types Stack-based Buffer Overflow.
  XKB SetMap Request Stack-based Buffer Overflow.
  XSYNC Use-After-Free in FreeCounter().
  XSYNC Use-After-Free in SyncChangeCounter().
  GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write.
  CreateSaverWindow Use-After-Free Information Disclosure.
  DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write.
  For more information, see:
    https://lists.x.org/archives/xorg/2026-June/062239.html
    Zero Day Initiative identifiers:
    ZDI-CAN-30136
    ZDI-CAN-30159
    ZDI-CAN-30160
    ZDI-CAN-30161
    ZDI-CAN-30163
    ZDI-CAN-30164
    ZDI-CAN-30165
    ZDI-CAN-30168
  (* Security fix *)
patches/packages/xorg-server-xephyr-1.20.14-i586-20_slack15.0.txz:  Rebuilt.
patches/packages/xorg-server-xnest-1.20.14-i586-20_slack15.0.txz:  Rebuilt.
patches/packages/xorg-server-xvfb-1.20.14-i586-20_slack15.0.txz:  Rebuilt.
patches/packages/xorg-server-xwayland-21.1.4-i586-18_slack15.0.txz:  Rebuilt.
  This update fixes security issues:
  Font Alias Stack-based Buffer Overflow.
  XSYNC Use-After-Free in miSyncDestroyFence().
  XKB Key Types Stack-based Buffer Overflow.
  XKB SetMap Request Stack-based Buffer Overflow.
  XSYNC Use-After-Free in FreeCounter().
  XSYNC Use-After-Free in SyncChangeCounter().
  GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write.
  CreateSaverWindow Use-After-Free Information Disclosure.
  For more information, see:
    https://lists.x.org/archives/xorg/2026-June/062239.html
    Zero Day Initiative identifiers:
    ZDI-CAN-30136
    ZDI-CAN-30159
    ZDI-CAN-30160
    ZDI-CAN-30161
    ZDI-CAN-30163
    ZDI-CAN-30164
    ZDI-CAN-30165
    ZDI-CAN-30168
  (* 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-i586-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xephyr-1.20.14-i586-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xnest-1.20.14-i586-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xvfb-1.20.14-i586-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-15.0/patches/packages/xorg-server-xwayland-21.1.4-i586-18_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_64-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xephyr-1.20.14-x86_64-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xnest-1.20.14-x86_64-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xvfb-1.20.14-x86_64-20_slack15.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-15.0/patches/packages/xorg-server-xwayland-21.1.4-x86_64-18_slack15.0.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-21.1.23-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xephyr-21.1.23-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xnest-21.1.23-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xvfb-21.1.23-i686-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/xorg-server-xwayland-24.1.12-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-21.1.23-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xephyr-21.1.23-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xnest-21.1.23-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xvfb-21.1.23-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/xorg-server-xwayland-24.1.12-x86_64-1.txz


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

Slackware 15.0 package:
cbfac0caca2fc2edd2228b857c15e2e9  xorg-server-1.20.14-i586-20_slack15.0.txz
989c3361e90dfd378821ea34e7751260  xorg-server-xephyr-1.20.14-i586-20_slack15.0.txz
06dd4ee0ce1689ee00e14b1766b31d5e  xorg-server-xnest-1.20.14-i586-20_slack15.0.txz
2b1ed9bb753576011b1106d1d23b4321  xorg-server-xvfb-1.20.14-i586-20_slack15.0.txz
7f0369f809d460fc7dc1f6ea670fa3a3  xorg-server-xwayland-21.1.4-i586-18_slack15.0.txz

Slackware x86_64 15.0 package:
3549b9c524b4b2436be6e2e98a8bda08  xorg-server-1.20.14-x86_64-20_slack15.0.txz
46ee24c23d38fbb0553887380af8084b  xorg-server-xephyr-1.20.14-x86_64-20_slack15.0.txz
83664609d51c656ce0de22db26b39a6f  xorg-server-xnest-1.20.14-x86_64-20_slack15.0.txz
033150aaba698c643a1e83603fc954ce  xorg-server-xvfb-1.20.14-x86_64-20_slack15.0.txz
7bb0e6fec7dd96f690a8a5da3d71fcc7  xorg-server-xwayland-21.1.4-x86_64-18_slack15.0.txz

Slackware -current package:
e3593e978a2b547489ef619c7f43418e  x/xorg-server-21.1.23-i686-1.txz
cd72be47541994bc4daa892ce24b0822  x/xorg-server-xephyr-21.1.23-i686-1.txz
aa77f9979ebfc4695dd065b819e34c94  x/xorg-server-xnest-21.1.23-i686-1.txz
bebb97459412a7756dec668d20175f40  x/xorg-server-xvfb-21.1.23-i686-1.txz
9b89c94db354f501cce09a88458996c4  x/xorg-server-xwayland-24.1.12-i686-1.txz

Slackware x86_64 -current package:
192a9167288aab1a1cd01b853195e22f  x/xorg-server-21.1.23-x86_64-1.txz
1c4cace35ff4c181ced324d04072d1c9  x/xorg-server-xephyr-21.1.23-x86_64-1.txz
079fe68315de3bf3fe8ed4474b4f6ca1  x/xorg-server-xnest-21.1.23-x86_64-1.txz
e8370dae55b2d59f4e8b10e707c9ac2a  x/xorg-server-xvfb-21.1.23-x86_64-1.txz
631bad1a1d891e2f48224ad25a40d00f  x/xorg-server-xwayland-24.1.12-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

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