1=encoding utf8 2 3=head1 NAME 4 5perl5244delta - what is new for perl v5.24.4 6 7=head1 DESCRIPTION 8 9This document describes differences between the 5.24.3 release and the 5.24.4 10release. 11 12If you are upgrading from an earlier release such as 5.24.2, first read 13L<perl5243delta>, which describes differences between 5.24.2 and 5.24.3. 14 15=head1 Security 16 17=head2 [CVE-2018-6797] heap-buffer-overflow (WRITE of size 1) in S_regatom (regcomp.c) 18 19A crafted regular expression could cause a heap buffer write overflow, with 20control over the bytes written. 21L<[GH #16185]|https://github.com/Perl/perl5/issues/16185> 22 23=head2 [CVE-2018-6798] Heap-buffer-overflow in Perl__byte_dump_string (utf8.c) 24 25Matching a crafted locale dependent regular expression could cause a heap 26buffer read overflow and potentially information disclosure. 27L<[GH #16143]|https://github.com/Perl/perl5/issues/16143> 28 29=head2 [CVE-2018-6913] heap-buffer-overflow in S_pack_rec 30 31C<pack()> could cause a heap buffer write overflow with a large item count. 32L<[GH #16098]|https://github.com/Perl/perl5/issues/16098> 33 34=head2 Assertion failure in Perl__core_swash_init (utf8.c) 35 36Control characters in a supposed Unicode property name could cause perl to 37crash. This has been fixed. 38L<[perl #132055]|https://rt.perl.org/Public/Bug/Display.html?id=132055> 39L<[perl #132553]|https://rt.perl.org/Public/Bug/Display.html?id=132553> 40L<[perl #132658]|https://rt.perl.org/Public/Bug/Display.html?id=132658> 41 42=head1 Incompatible Changes 43 44There are no changes intentionally incompatible with 5.24.3. If any exist, 45they are bugs, and we request that you submit a report. See L</Reporting 46Bugs> below. 47 48=head1 Modules and Pragmata 49 50=head2 Updated Modules and Pragmata 51 52=over 4 53 54=item * 55 56L<Module::CoreList> has been upgraded from version 5.20170922_24 to 5.20180414_24. 57 58=back 59 60=head1 Selected Bug Fixes 61 62=over 4 63 64=item * 65 66The C<readpipe()> built-in function now checks at compile time that it has only 67one parameter expression, and puts it in scalar context, thus ensuring that it 68doesn't corrupt the stack at runtime. 69L<[GH #2793]|https://github.com/Perl/perl5/issues/2793> 70 71=back 72 73=head1 Acknowledgements 74 75Perl 5.24.4 represents approximately 7 months of development since Perl 5.24.3 76and contains approximately 2,400 lines of changes across 49 files from 12 77authors. 78 79Excluding auto-generated files, documentation and release tools, there were 80approximately 1,300 lines of changes to 12 .pm, .t, .c and .h files. 81 82Perl continues to flourish into its third decade thanks to a vibrant community 83of users and developers. The following people are known to have contributed 84the improvements that became Perl 5.24.4: 85 86Abigail, Chris 'BinGOs' Williams, John SJ Anderson, Karen Etheridge, Karl 87Williamson, Renee Baecker, Sawyer X, Steve Hay, Todd Rinaldo, Tony Cook, Yves 88Orton, Zefram. 89 90The list above is almost certainly incomplete as it is automatically generated 91from version control history. In particular, it does not include the names of 92the (very much appreciated) contributors who reported issues to the Perl bug 93tracker. 94 95Many of the changes included in this version originated in the CPAN modules 96included in Perl's core. We're grateful to the entire CPAN community for 97helping Perl to flourish. 98 99For a more complete list of all of Perl's historical contributors, please see 100the F<AUTHORS> file in the Perl source distribution. 101 102=head1 Reporting Bugs 103 104If you find what you think is a bug, you might check the articles recently 105posted to the comp.lang.perl.misc newsgroup and the perl bug database at 106L<https://rt.perl.org/> . There may also be information at 107L<http://www.perl.org/> , the Perl Home Page. 108 109If you believe you have an unreported bug, please run the L<perlbug> program 110included with your release. Be sure to trim your bug down to a tiny but 111sufficient test case. Your bug report, along with the output of C<perl -V>, 112will be sent off to perlbug@perl.org to be analysed by the Perl porting team. 113 114If the bug you are reporting has security implications which make it 115inappropriate to send to a publicly archived mailing list, then see 116L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> 117for details of how to report the issue. 118 119=head1 SEE ALSO 120 121The F<Changes> file for an explanation of how to view exhaustive details on 122what changed. 123 124The F<INSTALL> file for how to build Perl. 125 126The F<README> file for general stuff. 127 128The F<Artistic> and F<Copying> files for copyright information. 129 130=cut 131