New gnutls packages are available for Slackware 12.0, 12.1, and -current to correctly fix the certificate chain verification issue that the upgrade to gnutls-2.6.1 attempted to fix. Without this upgrade, processing a certificate chain containing only one self-signed certificate may cause GnuTLS linked programs to crash.



Here are the details from the Slackware 12.1 ChangeLog:
+--------------------------+
patches/packages/gnutls-2.6.2-i486-1_slack12.1.tgz:
Upgraded to gnutls-2.6.2.
The security fix in gnutls-2.6.1 had a flaw in cases where the
certificate chain contained only one self-signed certificate.
This update fixes the issue.
+--------------------------+


Where to find the new packages:
+-----------------------------+

HINT: Getting slow download speeds from ftp.slackware.com?
Give slackware.osuosl.org a try. This is another primary FTP site
for Slackware that can be considerably faster than downloading
directly from ftp.slackware.com.

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating additional 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 12.0:
ftp://ftp.slackware.com/pub/slackware/slackware-12.0/patches/packages/gnutls-2.6.2-i486-1_slack12.0.tgz

Updated package for Slackware 12.1:
ftp://ftp.slackware.com/pub/slackware/slackware-12.1/patches/packages/gnutls-2.6.2-i486-1_slack12.1.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/gnutls-2.6.2-i486-1.tgz


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

Slackware 12.0 package:
da23cbc35ceafc3de50c1d32e235a1f0 gnutls-2.6.2-i486-1_slack12.0.tgz

Slackware 12.1 package:
f712d39374134e84629e2c2539f6c75f gnutls-2.6.2-i486-1_slack12.1.tgz

Slackware -current package:
7a838bc68ee6c9690a524658e0c3aefa gnutls-2.6.2-i486-1.tgz


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

Upgrade the package as root:
# upgradepkg gnutls-2.6.2-i486-1_slack12.1.tgz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key