5 perl5163delta - what is new for perl v5.16.3
9 This document describes differences between the 5.16.2 release and
12 If you are upgrading from an earlier release such as 5.16.1, first read
13 L<perl5162delta>, which describes differences between 5.16.1 and
16 =head1 Core Enhancements
18 No changes since 5.16.0.
22 This release contains one major and a number of minor security fixes.
23 These latter are included mainly to allow the test suite to pass cleanly
24 with the clang compiler's address sanitizer facility.
26 =head2 CVE-2013-1667: memory exhaustion with arbitrary hash keys
28 With a carefully crafted set of hash keys (for example arguments on a
29 URL), it is possible to cause a hash to consume a large amount of memory
30 and CPU, and thus possibly to achieve a Denial-of-Service.
32 This problem has been fixed.
34 =head2 wrap-around with IO on long strings
36 Reading or writing strings greater than 2**31 bytes in size could segfault
37 due to integer wraparound.
39 This problem has been fixed.
41 =head2 memory leak in Encode
43 The UTF-8 encoding implementation in Encode.xs had a memory leak which has been
46 =head1 Incompatible Changes
48 There are no changes intentionally incompatible with 5.16.0. If any
49 exist, they are bugs and reports are welcome.
53 There have been no deprecations since 5.16.0.
55 =head1 Modules and Pragmata
57 =head2 Updated Modules and Pragmata
63 L<Encode> has been upgraded from version 2.44 to version 2.44_01.
67 L<Module::CoreList> has been upgraded from version 2.76 to version 2.76_02.
71 L<XS::APItest> has been upgraded from version 0.38 to version 0.39.
79 =head1 Acknowledgements
81 Perl 5.16.3 represents approximately 4 months of development since Perl 5.16.2
82 and contains approximately 870 lines of changes across 39 files from 7 authors.
84 Perl continues to flourish into its third decade thanks to a vibrant community
85 of users and developers. The following people are known to have contributed the
86 improvements that became Perl 5.16.3:
88 Andy Dougherty, Chris 'BinGOs' Williams, Dave Rolsky, David Mitchell, Michael
89 Schroeder, Ricardo Signes, Yves Orton.
91 The list above is almost certainly incomplete as it is automatically generated
92 from version control history. In particular, it does not include the names of
93 the (very much appreciated) contributors who reported issues to the Perl bug
96 For a more complete list of all of Perl's historical contributors, please see
97 the F<AUTHORS> file in the Perl source distribution.
101 If you find what you think is a bug, you might check the articles
102 recently posted to the comp.lang.perl.misc newsgroup and the perl
103 bug database at http://rt.perl.org/perlbug/ . There may also be
104 information at http://www.perl.org/ , the Perl Home Page.
106 If you believe you have an unreported bug, please run the L<perlbug>
107 program included with your release. Be sure to trim your bug down
108 to a tiny but sufficient test case. Your bug report, along with the
109 output of C<perl -V>, will be sent off to perlbug@perl.org to be
110 analysed by the Perl porting team.
112 If the bug you are reporting has security implications, which make it
113 inappropriate to send to a publicly archived mailing list, then please
114 send it to perl5-security-report@perl.org. This points to a closed
115 subscription unarchived mailing list, which includes all the core
116 committers, who will be able to help assess the impact of issues, figure
117 out a resolution, and help co-ordinate the release of patches to
118 mitigate or fix the problem across all platforms on which Perl is
119 supported. Please only use this address for security issues in the Perl
120 core, not for modules independently distributed on CPAN.
124 The F<Changes> file for an explanation of how to view exhaustive details
127 The F<INSTALL> file for how to build Perl.
129 The F<README> file for general stuff.
131 The F<Artistic> and F<Copying> files for copyright information.