New m4 packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1, 10.2, 11.0, 12.0, and -current to fix security issues.

More details about the issues may be found in the Common Vulnerabilities and Exposures (CVE) database:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1687
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1688



Here are the details from the Slackware 12.0 ChangeLog:
+--------------------------+
patches/packages/m4-1.4.11-i486-1_slack12.0.tgz: Upgraded to m4-1.4.11.
In addition to bugfixes and enhancements, this version of m4 also fixes two
issues with possible security implications. A minor security fix with the
use of "maketemp" and "mkstemp" -- these are now quoted to prevent the
(rather unlikely) possibility that an unquoted string could match an
existing macro causing operations to be done on the wrong file. Also,
a problem with the '-F' option (introduced with version 1.4) could cause a
core dump or possibly (with certain file names) the execution of arbitrary
code. For more information on these issues, see:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1687
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1688
(* Security fix *)
+--------------------------+


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 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/m4-1.4.11-i386-1_slack8.1.tgz

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/m4-1.4.11-i386-1_slack9.0.tgz

Updated package for Slackware 9.1:
ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/m4-1.4.11-i486-1_slack9.1.tgz

Updated package for Slackware 10.0:
ftp://ftp.slackware.com/pub/slackware/slackware-10.0/patches/packages/m4-1.4.11-i486-1_slack10.0.tgz

Updated package for Slackware 10.1:
ftp://ftp.slackware.com/pub/slackware/slackware-10.1/patches/packages/m4-1.4.11-i486-1_slack10.1.tgz

Updated package for Slackware 10.2:
ftp://ftp.slackware.com/pub/slackware/slackware-10.2/patches/packages/m4-1.4.11-i486-1_slack10.2.tgz

Updated package for Slackware 11.0:
ftp://ftp.slackware.com/pub/slackware/slackware-11.0/patches/packages/m4-1.4.11-i486-1_slack11.0.tgz

Updated package for Slackware 12.0:
ftp://ftp.slackware.com/pub/slackware/slackware-12.0/patches/packages/m4-1.4.11-i486-1_slack12.0.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/d/m4-1.4.11-i486-1.tgz


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

Slackware 8.1 package:
1179fae2c4429945c3e6441fed82709d m4-1.4.11-i386-1_slack8.1.tgz

Slackware 9.0 package:
d9e5769918dc1741db6bb2619f060995 m4-1.4.11-i386-1_slack9.0.tgz

Slackware 9.1 package:
796f62a0d275b1e9bc4bad8d40595a4e m4-1.4.11-i486-1_slack9.1.tgz

Slackware 10.0 package:
032835fa9f150839ca0dfac4c73a5498 m4-1.4.11-i486-1_slack10.0.tgz

Slackware 10.1 package:
e0dd3949d996a8fa12bc480fe2d4eda5 m4-1.4.11-i486-1_slack10.1.tgz

Slackware 10.2 package:
690aa0ae07fcb68096b7122f304a9ea1 m4-1.4.11-i486-1_slack10.2.tgz

Slackware 11.0 package:
c48865785be7e2ea5357a43bd625a17f m4-1.4.11-i486-1_slack11.0.tgz

Slackware 12.0 package:
6655deb1e644f356b2ccf74edd3c9d4e m4-1.4.11-i486-1_slack12.0.tgz

Slackware -current package:
b56a401503f4285ff0f660bc6da769b8 m4-1.4.11-i486-1.tgz


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

Upgrade the package as root:
# upgradepkg m4-1.4.11-i486-1_slack12.0.tgz


+-----+

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