libpng (SSA:2007-136-01)
Posted on: 05/17/2007 12:12 PM

New libpng packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1, 10.2, 11.0, and -current to fix a security issue.

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

Here are the details from the Slackware 11.0 ChangeLog:
Upgraded to libpng-1.2.18.
A grayscale PNG image with a malformed (bad CRC) tRNS chunk will crash some
libpng applications. This vulnerability has been assigned the identifiers
CVE-2007-2445 and CERT VU#684664.
For more information, see:
(* Security fix *)

Where to find the new packages:

HINT: Getting slow download speeds from
Give a try. This is another primary FTP site
for Slackware that can be considerably faster than downloading

Thanks to the friendly folks at the OSU Open Source Lab
( for donating additional FTP and rsync hosting
to the Slackware project! :-)

Also see the "Get Slack" section on for
additional mirror sites near you.

Updated package for Slackware 8.1:

Updated package for Slackware 9.0:

Updated package for Slackware 9.1:

Updated package for Slackware 10.0:

Updated package for Slackware 10.1:

Updated package for Slackware 10.2:

Updated package for Slackware 11.0:

Updated package for Slackware -current:

MD5 signatures:

Slackware 8.1 package:
c7eb1c4fdb9770a6cdf74f254f81fc27 libpng-1.2.18-i386-1_slack8.1.tgz

Slackware 9.0 package:
8108fa520ece9138607731a74dfc141e libpng-1.2.18-i386-1_slack9.0.tgz

Slackware 9.1 package:
ac40a7b0b793dbf186fa7765f3ab7f49 libpng-1.2.18-i486-1_slack9.1.tgz

Slackware 10.0 package:
c83777019c539e619a8f08a3fe4ca145 libpng-1.2.18-i486-1_slack10.0.tgz

Slackware 10.1 package:
3f9f1ba6c975ea16b8921482fba71c74 libpng-1.2.18-i486-1_slack10.1.tgz

Slackware 10.2 package:
3a7f07dbaef1058987718fc5bc2beed0 libpng-1.2.18-i486-1_slack10.2.tgz

Slackware 11.0 package:
0dd59c370e78ef621ce810e55a012596 libpng-1.2.18-i486-1_slack11.0.tgz

Slackware -current package:
ea3063b5c3ae38d48aff4631d0275cba libpng-1.2.18-i486-1.tgz

Installation instructions:

Upgrade the packages as root:
# upgradepkg libpng-1.2.18-i486-1_slack11.0.tgz


Slackware Linux Security Team

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