/ 
perl-5.40.2
⭐ Starred 2013
/ File::Spec::Cygwin
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

File::Spec::Cygwin - methods for Cygwin file specs

SYNOPSIS

require File::Spec::Cygwin; # Done internally by File::Spec if needed

DESCRIPTION

See File::Spec and File::Spec::Unix. This package overrides the implementation of these methods, not the semantics.

This module is still in beta. Cygwin-knowledgeable folks are invited to offer patches and suggestions.

canonpath

Any \ (backslashes) are converted to / (forward slashes), and then File::Spec::Unix canonpath() is called on the result.

file_name_is_absolute

True is returned if the file name begins with drive_letter:, and if not, File::Spec::Unix file_name_is_absolute() is called.

tmpdir (override)

Returns a string representation of the first existing directory from the following list:

$ENV{TMPDIR}
/tmp
$ENV{'TMP'}
$ENV{'TEMP'}
C:/temp

If running under taint mode, and if the environment variables are tainted, they are not used.

case_tolerant

Override Unix. Cygwin case-tolerance depends on managed mount settings and as with MsWin32 on GetVolumeInformation() $ouFsFlags == FS_CASE_SENSITIVE, indicating the case significance when comparing file specifications. Default: 1

COPYRIGHT

Copyright (c) 2004,2007 by the Perl 5 Porters. All rights reserved.

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