Updated mozilla-firefox packages has been released for Slackware 14.2 and current to address multiple security issues.

slackware-security: mozilla-firefox (SSA:2020-094-01)

New mozilla-firefox packages are available for Slackware 14.2 and -current to
fix security issues.

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/mozilla-firefox-68.6.1esr-i686-1_slack14.2.txz: Upgraded.
This release contains critical security fixes and improvements.
"Under certain conditions, when running the nsDocShell destructor, a race
condition can cause a use-after-free. We are aware of targeted attacks in
the wild abusing this flaw."
"Under certain conditions, when handling a ReadableStream, a race condition
can cause a use-after-free. We are aware of targeted attacks in the wild
abusing this flaw."
For more information, see:
https://www.mozilla.org/en-US/firefox/68.6.1/releasenotes/
https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6819
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6820
(* 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 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/mozilla-firefox-68.6.1esr-i686-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/mozilla-firefox-68.6.1esr-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/xap/mozilla-firefox-68.6.1esr-i686-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/xap/mozilla-firefox-68.6.1esr-x86_64-1.txz

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

Slackware 14.2 package:
8b2eb341ce310660bd7776be0e941779 mozilla-firefox-68.6.1esr-i686-1_slack14.2.txz

Slackware x86_64 14.2 package:
a2664ad8d32a5c26f1cd19fe3dab5e49 mozilla-firefox-68.6.1esr-x86_64-1_slack14.2.txz

Slackware -current package:
0be47fd6ac6cb7a92958ee263489f6e9 xap/mozilla-firefox-68.6.1esr-i686-1.txz

Slackware x86_64 -current package:
781e4b6619da74250fc8d951ef49223e xap/mozilla-firefox-68.6.1esr-x86_64-1.txz

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

Upgrade the package as root:
# upgradepkg mozilla-firefox-68.6.1esr-i686-1_slack14.2.txz