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1 | =encoding utf8 |
2 | ||
3 | =head1 NAME | |
4 | ||
5 | perl5244delta - what is new for perl v5.24.4 | |
6 | ||
7 | =head1 DESCRIPTION | |
8 | ||
9 | This document describes differences between the 5.24.3 release and the 5.24.4 | |
10 | release. | |
11 | ||
12 | If you are upgrading from an earlier release such as 5.24.2, first read | |
13 | L<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 | ||
19 | A crafted regular expression could cause a heap buffer write overflow, with | |
20 | control over the bytes written. | |
21 | L<[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 | ||
25 | Matching a crafted locale dependent regular expression could cause a heap | |
26 | buffer read overflow and potentially information disclosure. | |
27 | L<[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 | ||
31 | C<pack()> could cause a heap buffer write overflow with a large item count. | |
32 | L<[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 | ||
36 | Control characters in a supposed Unicode property name could cause perl to | |
37 | crash. This has been fixed. | |
38 | L<[perl #132055]|https://rt.perl.org/Public/Bug/Display.html?id=132055> | |
39 | L<[perl #132553]|https://rt.perl.org/Public/Bug/Display.html?id=132553> | |
40 | L<[perl #132658]|https://rt.perl.org/Public/Bug/Display.html?id=132658> | |
41 | ||
42 | =head1 Incompatible Changes | |
43 | ||
44 | There are no changes intentionally incompatible with 5.24.3. If any exist, | |
45 | they are bugs, and we request that you submit a report. See L</Reporting | |
46 | Bugs> below. | |
47 | ||
48 | =head1 Modules and Pragmata | |
49 | ||
50 | =head2 Updated Modules and Pragmata | |
51 | ||
52 | =over 4 | |
53 | ||
54 | =item * | |
55 | ||
56 | L<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 | ||
66 | The C<readpipe()> built-in function now checks at compile time that it has only | |
67 | one parameter expression, and puts it in scalar context, thus ensuring that it | |
68 | doesn't corrupt the stack at runtime. | |
69 | L<[perl #4574]|https://rt.perl.org/Public/Bug/Display.html?id=4574> | |
70 | ||
71 | =back | |
72 | ||
73 | =head1 Acknowledgements | |
74 | ||
75 | Perl 5.24.4 represents approximately 7 months of development since Perl 5.24.3 | |
76 | and contains approximately 2,400 lines of changes across 49 files from 12 | |
77 | authors. | |
78 | ||
79 | Excluding auto-generated files, documentation and release tools, there were | |
80 | approximately 1,300 lines of changes to 12 .pm, .t, .c and .h files. | |
81 | ||
82 | Perl continues to flourish into its third decade thanks to a vibrant community | |
83 | of users and developers. The following people are known to have contributed | |
84 | the improvements that became Perl 5.24.4: | |
85 | ||
86 | Abigail, Chris 'BinGOs' Williams, John SJ Anderson, Karen Etheridge, Karl | |
87 | Williamson, Renee Baecker, Sawyer X, Steve Hay, Todd Rinaldo, Tony Cook, Yves | |
88 | Orton, Zefram. | |
89 | ||
90 | The list above is almost certainly incomplete as it is automatically generated | |
91 | from version control history. In particular, it does not include the names of | |
92 | the (very much appreciated) contributors who reported issues to the Perl bug | |
93 | tracker. | |
94 | ||
95 | Many of the changes included in this version originated in the CPAN modules | |
96 | included in Perl's core. We're grateful to the entire CPAN community for | |
97 | helping Perl to flourish. | |
98 | ||
99 | For a more complete list of all of Perl's historical contributors, please see | |
100 | the F<AUTHORS> file in the Perl source distribution. | |
101 | ||
102 | =head1 Reporting Bugs | |
103 | ||
104 | If you find what you think is a bug, you might check the articles recently | |
105 | posted to the comp.lang.perl.misc newsgroup and the perl bug database at | |
106 | L<https://rt.perl.org/> . There may also be information at | |
107 | L<http://www.perl.org/> , the Perl Home Page. | |
108 | ||
109 | If you believe you have an unreported bug, please run the L<perlbug> program | |
110 | included with your release. Be sure to trim your bug down to a tiny but | |
111 | sufficient test case. Your bug report, along with the output of C<perl -V>, | |
112 | will be sent off to perlbug@perl.org to be analysed by the Perl porting team. | |
113 | ||
114 | If the bug you are reporting has security implications which make it | |
115 | inappropriate to send to a publicly archived mailing list, then see | |
116 | L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> | |
117 | for details of how to report the issue. | |
118 | ||
119 | =head1 SEE ALSO | |
120 | ||
121 | The F<Changes> file for an explanation of how to view exhaustive details on | |
122 | what changed. | |
123 | ||
124 | The F<INSTALL> file for how to build Perl. | |
125 | ||
126 | The F<README> file for general stuff. | |
127 | ||
128 | The F<Artistic> and F<Copying> files for copyright information. | |
129 | ||
130 | =cut |