/ 
perl-5.44.0
⭐ Starred 2013 / Pod::Perldoc::GetOptsOO
Security Advisories (1)
CVE-2026-15534 (2026-08-09)

Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch. The regex engine's superlinear cache holds one bit per subject position for each participating WHILEM node, so the bit count is the subject length plus one times the number of nodes. Nothing checks that product for positive overflow of the signed 32-bit count: a 286331153 byte subject matched against a pattern with 15 participating nodes stores the count as 14, leaving a two byte cache. The cache is then indexed from the real match position and node number, so reads go past the end of the allocation, and on failure CACHEsayNO sets a bit past it. A caller that matches an attacker controlled subject of this size against a pattern of this shape can crash the process or corrupt heap memory.

NAME

Pod::Perldoc::GetOptsOO - Customized option parser for Pod::Perldoc

SYNOPSIS

use Pod::Perldoc::GetOptsOO ();

Pod::Perldoc::GetOptsOO::getopts( $obj, \@args, $truth )
   or die "wrong usage";

DESCRIPTION

Implements a customized option parser used for Pod::Perldoc.

Rather like Getopt::Std's getopts:

Call Pod::Perldoc::GetOptsOO::getopts($object, \@ARGV, $truth)
Given -n, if there's a opt_n_with, it'll call $object->opt_n_with( ARGUMENT ) (e.g., "-n foo" => $object->opt_n_with('foo'). Ditto "-nfoo")
Otherwise (given -n) if there's an opt_n, we'll call it $object->opt_n($truth) (Truth defaults to 1)
Otherwise we try calling $object->handle_unknown_option('n') (and we increment the error count by the return value of it)
If there's no handle_unknown_option, then we just warn, and then increment the error counter

The return value of Pod::Perldoc::GetOptsOO::getopts is true if no errors, otherwise it's false.

SEE ALSO

Pod::Perldoc

COPYRIGHT AND DISCLAIMERS

Copyright (c) 2002-2007 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

Current maintainer: Mark Allen <mallen@cpan.org>

Past contributions from: brian d foy <bdfoy@cpan.org> Adriano R. Ferreira <ferreira@cpan.org>, Sean M. Burke <sburke@cpan.org>