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[perl5.git] / pod / perl5244delta.pod
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SH
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<[perl #132227]|https://rt.perl.org/Public/Bug/Display.html?id=132227>
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<[perl #132063]|https://rt.perl.org/Public/Bug/Display.html?id=132063>
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<[perl #131844]|https://rt.perl.org/Public/Bug/Display.html?id=131844>
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<[perl #4574]|https://rt.perl.org/Public/Bug/Display.html?id=4574>
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