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perl-5.42.2
⭐ Starred 2013 / release_schedule
Security Advisories (3)
CVE-2026-57432 (2026-07-13)

Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-of-bounds heap read in pack and unpack. S_measure_struct adds each item's size times its repeat count to a running total with no overflow check, so a large repeat count in a pack or unpack template wraps the signed SSize_t total negative. The @, X, and x position codes then guard their moves with a signed length comparison that passes when the length is negative, advancing the buffer pointer out of bounds. A template derived from untrusted input can read heap memory past the buffer and return it to the caller.

CVE-2026-8376 (2026-05-25)

Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.

CVE-2026-13221 (2026-07-13)

Perl versions through 5.43.9 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

NAME

release_schedule - Perl 5 release schedule

STABLE RELEASE SCHEDULE

This schedule lists the projected or historical development and release schedules for the next, current and previous stable versions of Perl. Dates with two or more question marks will only be releases if deemed necessary by the Steering Council.

Perl 5.44

2026-??-??  5.44.0

Perl 5.42

2025-07-02  5.42.0  ✓       Philippe Bruhat
2026-03-08  5.42.1  ✓       Steve Hay
2026-03-29  5.42.2          Steve Hay

Perl 5.40

2024-06-09  5.40.0  ✓       Graham Knop
2025-01-18  5.40.1  ✓       Steve Hay
2025-04-13  5.40.2  ✓       Steve Hay
2025-08-03  5.40.3  ✓       Steve Hay
2026-03-29  5.40.4          Steve Hay

DEVELOPMENT RELEASE SCHEDULE

This schedule lists the release engineers for at least the next four months of releases of bleadperl. If there are fewer than four months listed as you make a release, it's important that you extend the schedule AND identify the next release engineer.

Before adding a release engineer, you must contact them and they must consent to ship the release.

When shipping a release, you should include the schedule for (at least) the next four releases. If a stable version of Perl is released, you should reset the version numbers to the next blead series.

Perl 5.43

2025-07-04  5.43.0  ✓       Philippe Bruhat   (tag only)
2025-07-20  5.43.1  ✓       Richard Leach
2025-08-20  5.43.2  ✓       Karen Etheridge
2025-09-20  5.43.3  ✓       Thibault Duponchelle
2025-10-22  5.43.4  ✓       Eric Herman
2025-11-20  5.43.5  ✓       Thibault Duponchelle
2025-12-20  5.43.6  ✓       Steve Hay
2026-01-19  5.43.7  ✓       Max Maischein
2026-02-20  5.43.8  ✓       Richard Leach     Contentious changes freeze
2026-03-20  5.43.9  ✓       Eric Herman       User-visible changes to
                                              correctly functioning
                                              programs freeze
2026-04-20  5.43.10         Philippe Bruhat   Full program freeze
2026-05-20  5.44.0                            New perl!

VICTIMS

The following porters have all consented to do at least one release of bleadperl. If you can't do a release and can't find a substitute amongst this list, mail p5p.

(Please do not add any names to this list without prior consent of the Steering Council.)

Abigail <abigail@abigail.be>
Aristotle Pagaltzis <pagaltzis@gmx.de>
Ask Bjørn Hansen <ask@perl.org>
Chris Williams <bingos@cpan.org>
Dave Cross <dave@perlhacks.com>
Dave Rolsky <autarch@urth.org>
David Golden <dagolden@cpan.org>
Florian Ragwitz <rafl@debian.org>
Jesse Luehrs <doy@cpan.org>
Jesse Vincent <jesse@cpan.org>
Karen Etheridge <ether@cpan.org>
Leon Brocard <acme@astray.com>
Matt Trout <mst@shadowcat.co.uk>
Matthew Horsfall <wolfsage@gmail.com>
Max Maischein <corion@cpan.org>
Paul Evans <leonerd@leonerd.org.uk>
Peter Martini <petercmartini@gmail.com>
Philippe Bruhat <book@cpan.org>
Ricardo Signes <rjbs@cpan.org>
Stevan Little <stevan@cpan.org>
Steve Hay <steve.m.hay@googlemail.com>
Tatsuhiko Miyagawa <miyagawa@bulknews.net>
Thibault Duponchelle <thibault.duponchelle@gmail.com>
Tony Cook <tony@develop-help.com>
Yves Orton <demerphq@gmail.com>
Ævar Arnfjörð Bjarmason <avar@cpan.org>

AUTHOR

Jesse Vincent <jesse@cpan.org>