libpng update

New libpng packages are available for Slackware 9.0, 9.1, and -current to
fix an issue where libpng could be caused to crash, perhaps creating a denial
of service issue if network services are linked with it.

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

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0421

Here are the details from the Slackware 9.1 ChangeLog:

Sun May 2 17:16:41 PDT 2004
patches/packages/libpng-1.2.5-i486-2.tgz: Patched a problem where
libpng may access memory that is out of bounds when creating an error
message, possibly crashing libpng and creating a denial of service.
For more details, see:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0421
(* Security fix *)

Where to find the new packages:

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/libpng-1.2.5-i386-2.tgz

Updated package for Slackware 9.1:
ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/libpng-1.2.5-i486-2.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/l/libpng-1.2.5-i486-2.tgz

MD5 signatures:

Slackware 9.0 package:
6c68e6a65850e26b60651d65fd8c0a2f libpng-1.2.5-i386-2.tgz

Slackware 9.1 package:
781c7e61997c34c5c70855be40012bb9 libpng-1.2.5-i486-2.tgz

Slackware -current package:
476b916ded315a2eba0af3c6637d770b libpng-1.2.5-i486-2.tgz

Installation instructions:

Upgrade the package as root:
> upgradepkg libpng-1.2.5-i486-2.tgz