A libX11 security update has been released for Slackware 14.0, 14.1, 14.2, and -current.

slackware-security: libX11 (SSA:2021-139-01)

[slackware-security] libX11 (SSA:2021-139-01)

New libX11 packages are available for Slackware 14.0, 14.1, 14.2, and -current
to fix a security issue.

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/libX11-1.7.1-i586-1_slack14.2.txz: Upgraded.
This update fixes missing request length checks in libX11 that can lead to
the emission of extra X protocol requests to the X server.
For more information, see:
  https://lists.x.org/archives/xorg-announce/2021-May/003088.html
  https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31535
(* 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 14.0:
  ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/libX11-1.7.1-i486-1_slack14.0.txz

Updated package for Slackware x86_64 14.0:
  ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/libX11-1.7.1-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
  ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/libX11-1.7.1-i486-1_slack14.1.txz

Updated package for Slackware x86_64 14.1:
  ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/libX11-1.7.1-x86_64-1_slack14.1.txz

Updated package for Slackware 14.2:
  ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/libX11-1.7.1-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
  ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/libX11-1.7.1-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
  ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/x/libX11-1.7.1-i586-1.txz

Updated package for Slackware x86_64 -current:
  ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/x/libX11-1.7.1-x86_64-1.txz

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

Slackware 14.0 package:
037e061214b75602fecda02dbeff4594 libX11-1.7.1-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
2d361c4a57965f7717c6baeeb64bfbdc libX11-1.7.1-x86_64-1_slack14.0.txz

Slackware 14.1 package:
2d248166e3300b2eddf1bf7cdfd9c48e libX11-1.7.1-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
1cbc196fc2b572d9ef1d782780e715c4 libX11-1.7.1-x86_64-1_slack14.1.txz

Slackware 14.2 package:
e7a8f6730ee2a9f0c1d1b882ef19a328 libX11-1.7.1-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
93c50f408507ca0ec710ec0652911fc5 libX11-1.7.1-x86_64-1_slack14.2.txz

Slackware -current package:
c4e7afb55aa5cbac724d078bac62d48e x/libX11-1.7.1-i586-1.txz

Slackware x86_64 -current package:
4c6d385206e5c2ba7614b1301b850115 x/libX11-1.7.1-x86_64-1.txz

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

Upgrade the package as root:
# upgradepkg libX11-1.7.1-i586-1_slack14.2.txz