Security Advisories (1)
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

TAP::Parser::YAMLish::Writer - Write YAMLish data

VERSION

Version 3.48

SYNOPSIS

use TAP::Parser::YAMLish::Writer;

my $data = {
    one => 1,
    two => 2,
    three => [ 1, 2, 3 ],
};

my $yw = TAP::Parser::YAMLish::Writer->new;

# Write to an array...
$yw->write( $data, \@some_array );

# ...an open file handle...
$yw->write( $data, $some_file_handle );

# ...a string ...
$yw->write( $data, \$some_string );

# ...or a closure
$yw->write( $data, sub {
    my $line = shift;
    print "$line\n";
} );

DESCRIPTION

Encodes a scalar, hash reference or array reference as YAMLish.

METHODS

Class Methods

new

my $writer = TAP::Parser::YAMLish::Writer->new;

The constructor new creates and returns an empty TAP::Parser::YAMLish::Writer object.

Instance Methods

write

$writer->write($obj, $output );

Encode a scalar, hash reference or array reference as YAML.

my $writer = sub {
    my $line = shift;
    print SOMEFILE "$line\n";
};

my $data = {
    one => 1,
    two => 2,
    three => [ 1, 2, 3 ],
};

my $yw = TAP::Parser::YAMLish::Writer->new;
$yw->write( $data, $writer );

The $output argument may be:

  • a reference to a scalar to append YAML to

  • the handle of an open file

  • a reference to an array into which YAML will be pushed

  • a code reference

If you supply a code reference the subroutine will be called once for each line of output with the line as its only argument. Passed lines will have no trailing newline.

AUTHOR

Andy Armstrong, <andy@hexten.net>

SEE ALSO

YAML::Tiny, YAML, YAML::Syck, Config::Tiny, CSS::Tiny, http://use.perl.org/~Alias/journal/29427

COPYRIGHT

Copyright 2007-2011 Andy Armstrong.

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

The full text of the license can be found in the LICENSE file included with this module.