PERL5144DELTA(1) Perl Programmers Reference Guide PERL5144DELTA(1)
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 $[;", when preceded by an "eval", and when not part
of an assignment, could crash. Fairly harmless.
This problem has been fixed.
wrap-around with IO on long strings
Reading or writing strings greater than 2**31 bytes in size could
segfault due to integer wraparound.
This problem has been fixed.
Incompatible Changes
There are no changes intentionally incompatible with 5.14.0. If any
exist, they are bugs and reports are welcome.
Deprecations
There have been no deprecations since 5.14.0.
Modules and Pragmata
New Modules and Pragmata
None
Updated Modules and Pragmata
The following modules have just the minor code fixes as listed above in
"Security" (version numbers have not changed):
Socket
SDBM_File
List::Util
Encode has been upgraded from version 2.42_01 to version 2.42_02.
Module::CoreList has been updated to version 2.49_06 to add data for
this release.
Removed Modules and Pragmata
None.
Documentation
New Documentation
None.
Changes to Existing Documentation
None.
Diagnostics
No new or changed diagnostics.
Utility Changes
None
Configuration and Compilation
No changes.
Platform Support
New Platforms
None.
Discontinued Platforms
None.
Platform-Specific Notes
VMS 5.14.3 failed to compile on VMS due to incomplete application of a
patch series that allowed "userelocatableinc" and "usesitecustomize"
to be used simultaneously. Other platforms were not affected and
the problem has now been corrected.
Selected Bug Fixes
• In Perl 5.14.0, "$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.
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