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PERL5144DELTA(1pm)     Perl Programmers Reference Guide     PERL5144DELTA(1pm)




NAME

       perl5144delta - what is new for perl v5.14.4


DESCRIPTION

       This document describes differences between the 5.14.3 release and the
       5.14.4 release.

       If you are upgrading from an earlier release such as 5.12.0, first read
       perl5140delta, which describes differences between 5.12.0 and 5.14.0.


Core Enhancements

       No changes since 5.14.0.


Security

       This release contains one major, and medium, and a number of minor
       security fixes.  The latter are included mainly to allow the test suite
       to pass cleanly with the clang compiler's address sanitizer facility.

   CVE-2013-1667: memory exhaustion with arbitrary hash keys
       With a carefully crafted set of hash keys (for example arguments on a
       URL), it is possible to cause a hash to consume a large amount of
       memory and CPU, and thus possibly to achieve a Denial-of-Service.

       This problem has been fixed.

   memory leak in Encode
       The UTF-8 encoding implementation in Encode.xs had a memory leak which
       has been fixed.

   [perl #111594] Socket::unpack_sockaddr_un heap-buffer-overflow
       A read buffer overflow could occur when copying "sockaddr" buffers.
       Fairly harmless.

       This problem has been fixed.

   [perl #111586] SDBM_File: fix off-by-one access to global ".dir"
       An extra byte was being copied for some string literals. Fairly
       harmless.

       This problem has been fixed.

   off-by-two error in List::Util
       A string literal was being used that included two bytes beyond the end
       of the string. Fairly harmless.

       This problem has been fixed.

   [perl #115994] fix segv in regcomp.c:S_join_exact()
       Under debugging builds, while marking optimised-out regex nodes as type
       "OPTIMIZED", it could treat blocks of exact text as if they were nodes,
       and thus SEGV. Fairly harmless.

       This problem has been fixed.

   [perl #115992] PL_eval_start use-after-free
       The statement "local $[;", when preceded by an "eval", and when not
       part of an assignment, could crash. Fairly harmless.

       This problem has been fixed.

   wrap-around with IO on long strings
       Reading or writing strings greater than 2**31 bytes in size could
       segfault due to integer wraparound.

       This problem has been fixed.


Incompatible Changes

       There are no changes intentionally incompatible with 5.14.0. If any
       exist, they are bugs and reports are welcome.


Deprecations

       There have been no deprecations since 5.14.0.


Modules and Pragmata

   New Modules and Pragmata
       None

   Updated Modules and Pragmata
       The following modules have just the minor code fixes as listed above in
       "Security" (version numbers have not changed):

       Socket
       SDBM_File
       List::Util

       Encode has been upgraded from version 2.42_01 to version 2.42_02.

       Module::CoreList has been updated to version 2.49_06 to add data for
       this release.

   Removed Modules and Pragmata
       None.


Documentation

   New Documentation
       None.

   Changes to Existing Documentation
       None.


Diagnostics

       No new or changed diagnostics.


Utility Changes

       None


Configuration and Compilation

       No changes.


Platform Support

   New Platforms
       None.

   Discontinued Platforms
       None.

   Platform-Specific Notes
       VMS 5.14.3 failed to compile on VMS due to incomplete application of a
           patch series that allowed "userelocatableinc" and
           "usesitecustomize" to be used simultaneously.  Other platforms were
           not affected and the problem has now been corrected.


Selected Bug Fixes

       o   In Perl 5.14.0, "$tainted ~~ @array" stopped working properly.
           Sometimes it would erroneously fail (when $tainted contained a
           string that occurs in the array after the first element) or
           erroneously succeed (when "undef" occurred after the first element)
           [perl #93590].


Known Problems

       None.


Acknowledgements

       Perl 5.14.4 represents approximately 5 months of development since Perl
       5.14.3 and contains approximately 1,700 lines of changes across 49
       files from 12 authors.

       Perl continues to flourish into its third decade thanks to a vibrant
       community of users and developers. The following people are known to
       have contributed the improvements that became Perl 5.14.4:

       Andy Dougherty, Chris 'BinGOs' Williams, Christian Hansen, Craig A.
       Berry, Dave Rolsky, David Mitchell, Dominic Hargreaves, Father
       Chrysostomos, Florian Ragwitz, Reini Urban, Ricardo Signes, Yves Orton.

       The list above is almost certainly incomplete as it is automatically
       generated from version control history. In particular, it does not
       include the names of the (very much appreciated) contributors who
       reported issues to the Perl bug tracker.

       For a more complete list of all of Perl's historical contributors,
       please see the AUTHORS file in the Perl source distribution.


Reporting Bugs

       If you find what you think is a bug, you might check the articles
       recently posted to the comp.lang.perl.misc newsgroup and the perl bug
       database at http://rt.perl.org/perlbug/ .  There may also be
       information at http://www.perl.org/ , the Perl Home Page.

       If you believe you have an unreported bug, please run the perlbug
       program included with your release.  Be sure to trim your bug down to a
       tiny but sufficient test case.  Your bug report, along with the output
       of "perl -V", will be sent off to perlbug@perl.org to be analysed by
       the Perl porting team.

       If the bug you are reporting has security implications, which make it
       inappropriate to send to a publicly archived mailing list, then please
       send it to perl5-security-report@perl.org. This points to a closed
       subscription unarchived mailing list, which includes all the core
       committers, who be able to help assess the impact of issues, figure out
       a resolution, and help co-ordinate the release of patches to mitigate
       or fix the problem across all platforms on which Perl is supported.
       Please only use this address for security issues in the Perl core, not
       for modules independently distributed on CPAN.


SEE ALSO

       The Changes file for an explanation of how to view exhaustive details
       on what changed.

       The INSTALL file for how to build Perl.

       The README file for general stuff.

       The Artistic and Copying files for copyright information.



perl v5.24.0                      2016-02-05                PERL5144DELTA(1pm)

perl 5.24 - Generated Sun Nov 27 09:15:43 CST 2016
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