A sudo security update has been released for Slackware Linux.

New sudo 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/sudo-1.8.31-i586-1_slack14.2.txz: Upgraded.
This update fixes a security issue:
In Sudo before 1.8.31, if pwfeedback is enabled in /etc/sudoers, users can
trigger a stack-based buffer overflow in the privileged sudo process.
(pwfeedback is a default setting in some Linux distributions; however, it
is not the default for upstream or in Slackware, and would exist only if
enabled by an administrator.) The attacker needs to deliver a long string
to the stdin of getln() in tgetpass.c.
For more information, see:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18634
(* 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/sudo-1.8.31-i486-1_slack14.0.txz

Updated package for Slackware x86_64 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/sudo-1.8.31-x86_64-1_slack14.0.txz

Updated package for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/sudo-1.8.31-i486-1_slack14.1.txz

Updated package for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/sudo-1.8.31-x86_64-1_slack14.1.txz

Updated package for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/sudo-1.8.31-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/sudo-1.8.31-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/ap/sudo-1.8.31-i586-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/ap/sudo-1.8.31-x86_64-1.txz

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

Slackware 14.0 package:
3a11f049390127f33463fa417e1fa056 sudo-1.8.31-i486-1_slack14.0.txz

Slackware x86_64 14.0 package:
062c43b8fe45b3ee9b8266c55d205886 sudo-1.8.31-x86_64-1_slack14.0.txz

Slackware 14.1 package:
47d24d47ba52cf740ab2d272abd5aac7 sudo-1.8.31-i486-1_slack14.1.txz

Slackware x86_64 14.1 package:
5132fffc0dff049e181742308ff01bee sudo-1.8.31-x86_64-1_slack14.1.txz

Slackware 14.2 package:
afe33f494b86169f3164a65ac63f7585 sudo-1.8.31-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
cdcb11096268b5f6b9eb1f6bcefdbb4d sudo-1.8.31-x86_64-1_slack14.2.txz

Slackware -current package:
f9d32384c3d4aafbb7e2bef19d36810b ap/sudo-1.8.31-i586-1.txz

Slackware x86_64 -current package:
f2d91e52d9e02ae701cabfd2f586ff07 ap/sudo-1.8.31-x86_64-1.txz

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

Upgrade the package as root:
# upgradepkg sudo-1.8.31-i586-1_slack14.2.txz