RHBA-2012:1240 - Bug Fix Advisory

Topic

Updated pcre packages that fix four bugs are now available for Red Hat
Enterprise Linux 6.

Description

The pcre packages provide the Perl-compatible regular expression (PCRE) library.

This update fixes the following bugs:

• Prior to this update, matching patterns with repeated forward reference failed to match if the first character was not repeated at the start of the matching text. This update modifies the matching algorithm not to expect the first character again. Now, patterns with repeated forward references match as expected. (BZ#756105)
• Prior to this update, case-less patterns in UTF-8 mode did not match characters at the end of input text with encoding length that was shorter than the encoding length of character in the pattern, for example "/ⱥ/8i".This update modifies the pcre library to count the length of matched characters correctly. Now, case-less patterns match characters with different encoding length correctly even at the end of an input string. (BZ#759475)
• Prior to this update, manual pages for the pcre library contained misprints. This update modifies the manual pages. (BZ#799003)
• Prior to this update, applications that were compiled with the libpcrecpp library from the pcre version 6 could not been executed against libpcrecpp library from the pcre version 7 because the application binary interface (ABI) was mismatched. This update adds the compat RE::Init() function for the pcre version 6 to the pcre version 7 libpcrecpp library. Applications that were compiled on Red Hat Enterprise Linux 5 and use the RE::Init function can now be executed on Red Hat Enterprise Linux 6. (BZ#842000)

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

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

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 - 756105 - Forward reference doesn't work when repeated twice or more
• BZ - 759475 - UTF-8 caseless match misses pairs with different encoding length
• BZ - 799003 - pcre-devel manual page fixes

CVEs

(none)

References

(none)