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perl-5.42.2
⭐ Starred 2013 / perlglob.bat
Security Advisories (1)
CVE-2026-8376 (2026-05-25)

Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.

NAME

perlglob.bat - a more capable perlglob.exe replacement

SYNOPSIS

@perlfiles = glob  "..\\pe?l/*.p?";
print <..\\pe?l/*.p?>;

# more efficient version
> perl -MFile::DosGlob=glob -e "print <../pe?l/*.p?>"

DESCRIPTION

This file is a portable replacement for perlglob.exe. It is largely compatible with perlglob.exe (the Microsoft setargv.obj version) in all but one respect--it understands wildcards in directory components.

It prints null-separated filenames to standard output.

For details of the globbing features implemented, see File::DosGlob.

While one may replace perlglob.exe with this, usage by overriding CORE::glob with File::DosGlob::glob should be much more efficient, because it avoids launching a separate process, and is therefore strongly recommended. See perlsub for details of overriding builtins.

AUTHOR

Gurusamy Sarathy <gsar@activestate.com>

SEE ALSO

perl

File::DosGlob