/ 
perl-5.41.3
⭐ Starred 2013
/ ExtUtils::MM_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

ExtUtils::MM_Cygwin - methods to override UN*X behaviour in ExtUtils::MakeMaker

SYNOPSIS

use ExtUtils::MM_Cygwin; # Done internally by ExtUtils::MakeMaker if needed

DESCRIPTION

See ExtUtils::MM_Unix for a documentation of the methods provided there.

os_flavor

We're Unix and Cygwin.

cflags

if configured for dynamic loading, triggers #define EXT in EXTERN.h

replace_manpage_separator

replaces strings '::' with '.' in MAN*POD man page names

init_linker

points to libperl.a

maybe_command

Determine whether a file is native to Cygwin by checking whether it resides inside the Cygwin installation (using Windows paths). If so, use ExtUtils::MM_Unix to determine if it may be a command. Otherwise use the tests from ExtUtils::MM_Win32.

dynamic_lib

Use the default to produce the *.dll's. But for new archdir dll's use the same rebase address if the old exists.

install

Rebase dll's with the global rebase database after installation.