New libvorbis packages are available for Slackware 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/libvorbis-1.3.6-i586-1_slack14.2.txz: Upgraded.
This release fixes security issues.
For more information, see:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14632
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14633
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5146
(* 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 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware-13.37/patches/packages/libvorbis-1.3.6-i486-1_slack13.37.txz

Updated package for Slackware x86_64 13.37:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.37/patches/packages/libvorbis-1.3.6-x86_64-1_slack13.37.txz

Updated package for Slackware 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/libvorbis-1.3.6-i486-1_slack14.0.txz

Updated package for Slackware x86_64 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/libvorbis-1.3.6-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/libvorbis-1.3.6-i486-1_slack14.1.txz

Updated package for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/libvorbis-1.3.6-x86_64-1_slack14.1.txz

Updated package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/libvorbis-1.3.6-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/libvorbis-1.3.6-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libvorbis-1.3.6-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libvorbis-1.3.6-x86_64-1.txz


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

Slackware 13.37 package:
3dd794b112624a5ba17bb69a5fed7847 libvorbis-1.3.6-i486-1_slack13.37.txz

Slackware x86_64 13.37 package:
56fd208df283eb869bfa86516e5d6ec6 libvorbis-1.3.6-x86_64-1_slack13.37.txz

Slackware 14.0 package:
bb307eedebd4379c48e67d748c95e0c7 libvorbis-1.3.6-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
b4f542a15373c230533063d34c7e6ddd libvorbis-1.3.6-x86_64-1_slack14.0.txz

Slackware 14.1 package:
f77f531736776dafe6f5d2ce78c58fba libvorbis-1.3.6-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
81f09863d017059994d71b431c7b1cd5 libvorbis-1.3.6-x86_64-1_slack14.1.txz

Slackware 14.2 package:
305791f25e2c5b48ffd29b93303ee182 libvorbis-1.3.6-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
410ab1b7db4f293bec4530ef2a212ad9 libvorbis-1.3.6-x86_64-1_slack14.2.txz

Slackware -current package:
d38b82806900081f7500c72d6440142e l/libvorbis-1.3.6-i586-1.txz

Slackware x86_64 -current package:
4105062494300e2496f5d60fed24fdcb l/libvorbis-1.3.6-x86_64-1.txz


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

Upgrade the package as root:
# upgradepkg libvorbis-1.3.6-i586-1_slack14.2.txz

  Libvorbis Security Update for Slackware Linux