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CVE-2025-40909 (2025-05-30)

Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6

NAME

Pod::Simple::SimpleTree -- parse Pod into a simple parse tree

SYNOPSIS

% cat ptest.pod

=head1 PIE

I like B<pie>!

% perl -MPod::Simple::SimpleTree -MData::Dumper -e \
   "print Dumper(Pod::Simple::SimpleTree->new->parse_file(shift)->root)" \
   ptest.pod

$VAR1 = [
          'Document',
          { 'start_line' => 1 },
          [
            'head1',
            { 'start_line' => 1 },
            'PIE'
          ],
          [
            'Para',
            { 'start_line' => 3 },
            'I like ',
            [
              'B',
              {},
              'pie'
            ],
            '!'
          ]
        ];

DESCRIPTION

This class is of interest to people writing a Pod processor/formatter.

This class takes Pod and parses it, returning a parse tree made just of arrayrefs, and hashrefs, and strings.

This is a subclass of Pod::Simple and inherits all its methods.

This class is inspired by XML::Parser's "Tree" parsing-style, although it doesn't use exactly the same LoL format.

METHODS

At the end of the parse, call $parser->root to get the tree's top node.

Tree Contents

Every element node in the parse tree is represented by an arrayref of the form: [ elementname, \%attributes, ...subnodes... ]. See the example tree dump in the Synopsis, above.

Every text node in the tree is represented by a simple (non-ref) string scalar. So you can test ref($node) to see whether you have an element node or just a text node.

The top node in the tree is [ 'Document', \%attributes, ...subnodes... ]

SEE ALSO

Pod::Simple

perllol

The "Tree" subsubsection in XML::Parser

SUPPORT

Questions or discussion about POD and Pod::Simple should be sent to the pod-people@perl.org mail list. Send an empty email to pod-people-subscribe@perl.org to subscribe.

This module is managed in an open GitHub repository, https://github.com/perl-pod/pod-simple/. Feel free to fork and contribute, or to clone https://github.com/perl-pod/pod-simple.git and send patches!

Patches against Pod::Simple are welcome. Please send bug reports to <bug-pod-simple@rt.cpan.org>.

COPYRIGHT AND DISCLAIMERS

Copyright (c) 2002 Sean M. Burke.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose.

AUTHOR

Pod::Simple was created by Sean M. Burke <sburke@cpan.org>. But don't bother him, he's retired.

Pod::Simple is maintained by:

  • Allison Randal allison@perl.org

  • Hans Dieter Pearcey hdp@cpan.org

  • David E. Wheeler dwheeler@cpan.org