A gnutls security update has been released for Slackware 14.2 and -current.

slackware-security: gnutls (SSA:2021-145-01)

[slackware-security] gnutls (SSA:2021-145-01)

New gnutls 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/gnutls-3.6.16-i586-1_slack14.2.txz: Upgraded.
Fixed potential miscalculation of ECDSA/EdDSA code backported from Nettle.
In GnuTLS, as long as it is built and linked against the fixed version of
Nettle, this only affects GOST curves. [CVE-2021-20305]
Fixed potential use-after-free in sending "key_share" and "pre_shared_key"
extensions. When sending those extensions, the client may dereference a
pointer no longer valid after realloc. This happens only when the client
sends a large Client Hello message, e.g., when HRR is sent in a resumed
session previously negotiated large FFDHE parameters, because the initial
allocation of the buffer is large enough without having to call realloc
(#1151). [GNUTLS-SA-2021-03-10, CVSS: low]
For more information, see:
  https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20305
(* 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/gnutls-3.6.16-i586-1_slack14.2.txz

Updated package for Slackware x86_64 14.2:
  ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/gnutls-3.6.16-x86_64-1_slack14.2.txz

Updated package for Slackware -current:
  ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/gnutls-3.6.16-i586-1.txz

Updated package for Slackware x86_64 -current:
  ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/gnutls-3.6.16-x86_64-1.txz

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

Slackware 14.2 package:
e5e090aec3cb58a0827c439b147f390a gnutls-3.6.16-i586-1_slack14.2.txz

Slackware x86_64 14.2 package:
be595ec5fcdbca3785300b5afb522cbc gnutls-3.6.16-x86_64-1_slack14.2.txz

Slackware -current package:
31f28c68fa45993cbbf776e8c9617bef n/gnutls-3.6.16-i586-1.txz

Slackware x86_64 -current package:
8ad989f9a529c145019bb4b31dd7c749 n/gnutls-3.6.16-x86_64-1.txz

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

Upgrade the package as root:
# upgradepkg gnutls-3.6.16-i586-1_slack14.2.txz