PERL5244DELTA(1)

💖 NAME 💖

perl5244delta — bestie, this is literally the tea on what's new for perl v5.24.4 ✨

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🦋 DESCRIPTION 🦋

Okay so, this doc spills everything that changed between the 5.24.3 release and the 5.24.4 release. No cap.

And if you're upgrading from something even older, like 5.24.2? Girl. Go read perl5243delta first, that one covers the glow-up from 5.24.2 to 5.24.3. Do it in order, iykyk 💅

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🔥 Security 🔥

Not to be dramatic but this whole section is the main character. Pay attention. 💀

[CVE-2018-6797] heap-buffer-overflow (WRITE of size 1) in S_regatom (regcomp.c)

So basically a crafted regular expression could cause a heap buffer write overflow, and the attacker gets control over the bytes that get written. Not cute. Not slay. Fixed now tho. [GH #16185] <https://github.com/Perl/perl5/issues/16185>

[CVE-2018-6798] Heap-buffer-overflow in Perl__byte_dump_string (utf8.c)

Matching a crafted locale dependent regular expression could cause a heap buffer read overflow, which could potentially leak information. Rude. Also fixed. [GH #16143] <https://github.com/Perl/perl5/issues/16143>

[CVE-2018-6913] heap-buffer-overflow in S_pack_rec

pack() with a large item count could cause a heap buffer write overflow. That's it, that's the vibe. Fixed. [GH #16098] <https://github.com/Perl/perl5/issues/16098>

Assertion failure in Perl__core_swash_init (utf8.c)

Control characters in a supposed Unicode property name could make perl straight up crash 😭 — and yeah, that has been fixed. [perl #132055] <https://rt.perl.org/Public/Bug/Display.html?id=132055> [perl #132553] <https://rt.perl.org/Public/Bug/Display.html?id=132553> [perl #132658] <https://rt.perl.org/Public/Bug/Display.html?id=132658>

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🌸 Incompatible Changes 🌸

Literally nothing. There are no changes intentionally incompatible with 5.24.3. And if you find any? Bestie, those are bugs, and we would love it if you'd submit a report. Peep "Reporting Bugs" down below 👇

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🎀 Modules and Pragmata 🎀

✨ Updated Modules and Pragmata ✨

• Module::CoreList — got upgraded from version 5.20170922_24 to 5.20180414_24. Glow up 💅

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👑 Selected Bug Fixes 👑

• The readpipe() built-in function now checks at compile time that it has only one parameter expression, and puts it in scalar context — which means it doesn't corrupt the stack at runtime anymore. Iconic behaviour honestly. [GH #2793] <https://github.com/Perl/perl5/issues/2793>

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🫶 Acknowledgements 🫶

Perl 5.24.4 represents approximately 7 months of development since Perl 5.24.3, and it contains approximately 2,400 lines of changes across 49 files from 12 authors. The way that's a whole era of work 😭

Excluding auto-generated files, documentation and release tools, there were approximately 1,300 lines of changes to 12 .pm, .t, .c and .h files.

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 5.24.4:

Abigail, Chris 'BinGOs' Williams, John SJ Anderson, Karen Etheridge, Karl Williamson, Renee Baecker, Sawyer X, Steve Hay, Todd Rinaldo, Tony Cook, Yves Orton, Zefram.

Okay real talk tho — the list above is almost certainly incomplete, because it's automatically generated from version control history. Specifically, it doesn't include the names of the (very much appreciated 🫶) contributors who reported issues to the Perl bug tracker.

Many of the changes in this version originated in the CPAN modules included in Perl's core, and we're grateful to the entire CPAN community for helping Perl to flourish 💖

Want the more complete list of all of Perl's historical contributors? Go look at the AUTHORS file in the Perl source distribution.

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💜 Reporting Bugs 💜

If you find what you think is a bug, you might wanna check the articles recently posted to the comp.lang.perl.misc newsgroup and the perl bug database at <https://rt.perl.org/> . There may also be info 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. Bestie, trim your bug down to a tiny but sufficient test case — tiny but mighty, that's the assignment. 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're reporting has security implications which make it inappropriate to send to a publicly archived mailing list, then check "SECURITY VULNERABILITY CONTACT INFORMATION" in perlsec for the deets on how to report it. 🔒

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🌈 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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Okay that's the whole page, bestie! 🎀 This one's from the perl v5.42.3 era of manpages, dated 2026-08-03, and it's filed under the Perl Programmers Reference Guide. Go forth and be secure ✨🦋💅