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

Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/libpcap-1.9.1-i586-1_slack14.2.txz: Upgraded.
This update is required for the new version of tcpdump.
patches/packages/tcpdump-4.9.3-i586-1_slack14.2.txz: Upgraded.
Fix buffer overflow/overread vulnerabilities and command line
argument/local issues.
For more information, see:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16808
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14468
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14469
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14470
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14466
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14461
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14462
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14465
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14881
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14464
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14463
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14467
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10103
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10105
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14880
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16451
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14882
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16227
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16229
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16301
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16230
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16452
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16300
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16228
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15166
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15167
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14879
(* 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 packages for Slackware 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/libpcap-1.9.1-i486-1_slack14.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/tcpdump-4.9.3-i486-1_slack14.0.txz

Updated packages for Slackware x86_64 14.0:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/libpcap-1.9.1-x86_64-1_slack14.0.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/tcpdump-4.9.3-x86_64-1_slack14.0.txz

Updated packages for Slackware 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/libpcap-1.9.1-i486-1_slack14.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/tcpdump-4.9.3-i486-1_slack14.1.txz

Updated packages for Slackware x86_64 14.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/libpcap-1.9.1-x86_64-1_slack14.1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/tcpdump-4.9.3-x86_64-1_slack14.1.txz

Updated packages for Slackware 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/libpcap-1.9.1-i586-1_slack14.2.txz
ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/tcpdump-4.9.3-i586-1_slack14.2.txz

Updated packages for Slackware x86_64 14.2:
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/libpcap-1.9.1-x86_64-1_slack14.2.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/tcpdump-4.9.3-x86_64-1_slack14.2.txz

Updated packages for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libpcap-1.9.0-i586-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/tcpdump-4.9.2-i586-3.txz

Updated packages for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/l/libpcap-1.9.1-x86_64-1.txz
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/tcpdump-4.9.3-x86_64-1.txz


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

Slackware 14.0 packages:
0855bcc24c0d39f6ec3c6fa7d956ebf4 libpcap-1.9.1-i486-1_slack14.0.txz
1c53d8ea7923c5947dbbf0eb2dfca2aa tcpdump-4.9.3-i486-1_slack14.0.txz

Slackware x86_64 14.0 packages:
080435560c6498ba82e3131d9d7f36e4 libpcap-1.9.1-x86_64-1_slack14.0.txz
3740823881e104943cb15be6870a0e7d tcpdump-4.9.3-x86_64-1_slack14.0.txz

Slackware 14.1 packages:
7f1dffd77993897a3729c1fb3ea5e395 libpcap-1.9.1-i486-1_slack14.1.txz
b267563e154bbddab251e8e2c7a11f69 tcpdump-4.9.3-i486-1_slack14.1.txz

Slackware x86_64 14.1 packages:
1177a6f007a4924c2116d15f8cb92900 libpcap-1.9.1-x86_64-1_slack14.1.txz
de9844ab61993927903a91fc05450c8c tcpdump-4.9.3-x86_64-1_slack14.1.txz

Slackware 14.2 packages:
2672c9a84590170ff8f7f2b233af9a38 libpcap-1.9.1-i586-1_slack14.2.txz
578dbf94aa192915243e2d200c557cc5 tcpdump-4.9.3-i586-1_slack14.2.txz

Slackware x86_64 14.2 packages:
16f70962eebe606d3d9668202752bc51 libpcap-1.9.1-x86_64-1_slack14.2.txz
0a4b8400d30a84bc1df774b3537cb4b5 tcpdump-4.9.3-x86_64-1_slack14.2.txz

Slackware -current packages:
8765839c82fc67a8075b9e1c5211776b l/libpcap-1.9.0-i586-1.txz
9de3c38d7c061534d28b5b599ab5d563 n/tcpdump-4.9.2-i586-3.txz

Slackware x86_64 -current packages:
cb278799afec0d6e99ce9a126b9e65f3 l/libpcap-1.9.1-x86_64-1.txz
2d14083ccadb447e5af06e0f940fefa5 n/tcpdump-4.9.3-x86_64-1.txz


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

Upgrade the packages as root:
# upgradepkg libpcap-1.9.1-i586-1_slack14.2.txz tcpdump-4.9.3-i586-1_slack14.2.txz

  tcpdump (SSA:2019-274-01) Update for Slackware