RHBA-2011:0527 - Bug Fix Advisory

Topic

Updated ghostscript packages that fix various bugs are now available for Red Hat
Enterprise Linux 6.

Description

The Ghostscript suite provides a PostScript interpreter, a set of C procedures
(the Ghostscript library, which implements the graphics capabilities in the
PostScript language), and an interpreter for PDF files. Ghostscript translates
PostScript code into many common, bitmapped formats, like those understood by
most printers and displays. This enables users to display PostScript files and
print them on non-PostScript printers.

This update fixes the following bugs:

• Previously, including a large JBIG2 compressed image in the PDF input file

could cause the pdf2ps conversion utility to terminate unexpectedly with a
segmentation fault. This was caused by the fact that the result of the
"jbig2_image_new" function call was not always checked properly. This error has
been fixed, and the inclusion of JBIG2 images no longer causes pdf2ps to crash.
(BZ#621118)

• Due to incorrect object management, Ghostscript could attempt to read from

uninitialized memory, which could lead to a segmentation fault. This update
applies a backported patch that addresses this issue, and Ghostscript no longer
crashes. (BZ#629562)

• The Fontmap.local file installed with the ghostscript package allows a system

administrator to override font substitutions. However, previous versions of the
Ghostscript suite did not use this file at all. This error has been fixed, and
the file is now used as expected. (BZ#629941)

• Previously, using the ps2pdf utility to convert a PostScript file to the PDF

format caused the resulting document to be created without working hyperlinks.
This update applies an upstream patch that resolves this issue, and ps2pdf now
crates PDF files with correct hyperlinks. (BZ#675692)

All users of ghostscript are advised to upgrade to these updated packages, which
fix these bugs.

Solution

Before applying this update, make sure that all previously-released errata
relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 621118 - pdf2ps segfaults on bad PDF
• BZ - 629562 - segfaults on x86_64
• BZ - 629941 - Fontmap.local file created by package is never used
• BZ - 675692 - ps2pdf does not produce working hyperlinks.

CVEs

(none)

References

(none)