PERL5362DELTA(1)

📦
version 5.42.3 · 17 versions
, in fedora 43, fedora 44

✨ PERL5362DELTA ✨

ok so this is the manual page for perl5362delta from the Perl Programmers Reference Guide, and bestie, we're about to go through everything 💖

🌸 NAME 🌸

perl5362delta — what is new for perl v5.36.2 🦋

💅 DESCRIPTION 💅

This document describes differences between the 5.36.1 release and the 5.36.2 release.

If you are upgrading from an earlier release such as 5.36.0, first read perl5361delta, which describes differences between 5.36.0 and 5.36.1. Like, read the lore in order, it's a series not a standalone 🎀

🔥 Security 🔥

This release fixes the following security issues. Yes we're starting with the spicy ones, no cap 💀

🚨 CVE-2023-47038 - Write past buffer end via illegal user-defined Unicode property 🚨

This vulnerability was reported directly to the Perl security team by Nathan Mills the.true.nathan.mills@gmail.com.

A crafted regular expression when compiled by perl 5.30.0 through 5.38.0 can cause a one-byte attacker controlled buffer overflow in a heap allocated buffer.

bestie that is a whole buffer overflow, one byte is still one byte, do NOT be casual about this 😭

🚨 CVE-2023-47039 - Perl for Windows binary hijacking vulnerability 🚨

This vulnerability was reported to the Intel Product Security Incident Response Team (PSIRT) by GitHub user ycdxsb <https://github.com/ycdxsb/WindowsPrivilegeEscalation>. PSIRT then reported it to the Perl security team.

Perl for Windows relies on the system path environment variable to find the shell (cmd.exe). When running an executable which uses Windows Perl interpreter, Perl attempts to find and execute cmd.exe within the operating system. However, due to path search order issues, Perl initially looks for cmd.exe in the current working directory.

An attacker with limited privileges can exploit this behavior by placing cmd.exe in locations with weak permissions, such as C:\ProgramData. By doing so, when an administrator attempts to use this executable from these compromised locations, arbitrary code can be executed.

the way that a path search order issue is just... giving privilege escalation. iconic behavior, terrible vibes 👑

🫶 Acknowledgements 🫶

Perl 5.36.2 represents approximately 1 month of development since Perl 5.36.1 and contains approximately 2,300 lines of changes across 38 files from 4 authors.

Excluding auto-generated files, documentation and release tools, there were approximately 1,400 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 5.36.2:

Karl Williamson, Paul Evans, Steve Hay, Tony Cook.

THE LEGENDS. THE ICONS. THE MOMENT. 🌟

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.

🐛 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 <http://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. ngl a tiny repro case is the love language of every maintainer fr fr 🍓

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.

security bugs go private, bestie. do not post the exploit in the public issue tracker 🙈

💖 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. literally just say thank you, it costs nothing and it means everything 🥹

👀 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.

and that's the whole page, bestie!! 💜 this was perl v5.42.3, dated 2026-08-03 — slay, go patch your perl, ily, bye ✨🎀🦋

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