PERL5303DELTA(1perl)

📦
version 5.44.0 · 2 versions
, in arch rolling

💖 PERL5303DELTA 💖

okay bestie, welcome to perl5303delta, part of the Perl Programmers Reference Guide (the 1perl manpage situation). this is the whole tea on what's new for perl v5.30.3, and yes, it's giving release-notes-but-make-it-cute. 🎀

✨ NAME ✨

perl5303delta — what is new for perl v5.30.3 🦋

🌸 DESCRIPTION 🌸

So this doc spills all the differences between the 5.30.2 release and the 5.30.3 release. fr fr.

If you're upgrading from something even earlier, like 5.30.1, bestie, you gotta read perl5302delta first — that one covers the differences between 5.30.1 and 5.30.2. do not skip it, i'm begging. 😭

🔥 Security 🔥

💀 [CVE-2020-10543] Buffer overflow caused by a crafted regular expression

A signed size_t integer overflow in the storage space calculations for nested regular expression quantifiers could cause a heap buffer overflow in Perl's regular expression compiler that overwrites memory allocated after the regular expression storage space with attacker supplied data. yeah. iconic in the worst way possible. 💅

The target system needs a sufficient amount of memory to allocate partial expansions of the nested quantifiers prior to the overflow occurring. This requirement is unlikely to be met on 64-bit systems.

Discovered by: ManhND of The Tarantula Team, VinCSS (a member of Vingroup).

💀 [CVE-2020-10878] Integer overflow via malformed bytecode produced by a crafted regular expression

Integer overflows in the calculation of offsets between instructions for the regular expression engine could cause corruption of the intermediate language state of a compiled regular expression. An attacker could abuse this behaviour to insert instructions into the compiled form of a Perl regular expression. not the vibe. 🚫

Discovered by: Hugo van der Sanden and Slaven Rezic.

💀 [CVE-2020-12723] Buffer overflow caused by a crafted regular expression

Recursive calls to S_study_chunk() by Perl's regular expression compiler to optimize the intermediate language representation of a regular expression could cause corruption of the intermediate language state of a compiled regular expression. screaming. 😭

Discovered by: Sergey Aleynikov.

📌 Additional Note

An application written in Perl would only be vulnerable to any of the above flaws if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario.

bestie, that's the whole point: attacker-supplied regexes = no. don't do it. periodt. 🙈

🚫 Incompatible Changes 🚫

There are no changes intentionally incompatible with Perl 5.30.2. If any exist, they are bugs, and we request that you submit a report. See "Reporting Bugs" below. slay, no breaking changes this time. 👑

📦 Modules and Pragmata 📦

⬆️ Updated Modules and Pragmata ⬆️

  • Module::CoreList has been upgraded from version 5.20200314 to 5.20200601_30. glow up ✨

🧪 Testing 🧪

Tests were added and changed to reflect the other additions and changes in this release. we stay testing, we stay winning. 💅

🫶 Acknowledgements 🫶

Perl 5.30.3 represents approximately 3 months of development since Perl 5.30.2 and contains approximately 1,100 lines of changes across 42 files from 7 authors.

Excluding auto-generated files, documentation and release tools, there were approximately 350 lines of changes to 8 .pm, .t, .c and .h files.

Perl continues to flourish into its fourth decade thanks to a vibrant community of users and developers. The following people are known to have contributed the improvements that became Perl 5.30.3:

Chris 'BinGOs' Williams, Hugo van der Sanden, John Lightsey, Karl Williamson, Nicolas R., Sawyer X, Steve Hay.

The list above is almost certainly incomplete as it is automatically generated from version control history. In particular, it does not include the names of the (very much appreciated) contributors who reported issues to the Perl bug tracker.

Many of the changes included in this version originated in the CPAN modules included in Perl's core. We're grateful to the entire CPAN community for helping Perl to flourish.

For a more complete list of all of Perl's historical contributors, please see the AUTHORS file in the Perl source distribution.

not me getting emotional over a perl release. the community really ate. 😭💖

🐛 Reporting Bugs 🐛

If you find what you think is a bug, you might check the perl bug database at <https://github.com/Perl/perl5/issues>. There may also be information at <https://www.perl.org/>, the Perl Home Page.

If you believe you have an unreported bug, please open an issue at <https://github.com/Perl/perl5/issues>. Be sure to trim your bug down to a tiny but sufficient test case. tiny but sufficient, bestie, that's the assignment. 📝

If the bug you are reporting has security implications which make it inappropriate to send to a public issue tracker, then see "SECURITY VULNERABILITY CONTACT INFORMATION" in perlsec for details of how to report the issue.

🙏 Give Thanks 🙏

If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you can do so by running the perlthanks program:

perlthanks

This will send an email to the Perl 5 Porters list with your show of thanks.

go on, send the thank-you email, it's giving grateful main character energy. 💌

👀 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.

aaand that's the whole page, bestie. this was perl v5.44.0, dated 2026-10-17, filed under PERL5303DELTA(1perl) — mwah, go forth and upgrade responsibly. 💜🌈🦋

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