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perl-5.42.2
⭐ Starred 2013 / Amiga::Exec
Security Advisories (3)
CVE-2026-13221 (2026-07-13)

Perl versions through 5.43.9 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and false negative matches (failing to match strings it should). When such a pattern gates an access or filtering decision, the result is wrong.

CVE-2026-57432 (2026-07-13)

Perl versions through 5.43.10 have an integer overflow in S_measure_struct leading to an out-of-bounds heap read in pack and unpack. S_measure_struct adds each item's size times its repeat count to a running total with no overflow check, so a large repeat count in a pack or unpack template wraps the signed SSize_t total negative. The @, X, and x position codes then guard their moves with a signed length comparison that passes when the length is negative, advancing the buffer pointer out of bounds. A template derived from untrusted input can read heap memory past the buffer and return it to the caller.

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

Amiga::Exec - Perl extension for low level amiga support

ABSTRACT

This a perl class / module to enables you to use various low level Amiga features such as waiting on an Exec signal

SYNOPSIS

# Wait for signla

use Amiga::Exec;
my $result = Amiga::ARexx->Wait('SignalMask' => $signalmask,
                                'TimeOut' => $timeoutinusecs);

DESCRIPTION

The interface to Exec in entirely encapsulated within the perl class, there is no need to access the low level methods directly and they are not exported by default.

Amiga::ARexx METHODS

Wait

$signals = Amiga::Exec->Wait('SignalMask' => $signalmask,
                             'TimeOut' => $timeoutinusecs );

Wait on a signal set with optional timeout. The result ($signals) should be checked to determine which signal was raised. It will be 0 for timeout.

Signal

The signal Exec signal mask

TimeOut

optional time out in microseconds.

EXPORT

None by default.

Exportable constants

None

AUTHOR

Andy Broad <andy@broad.ology.org.uk>

COPYRIGHT AND LICENSE

Copyright (C) 2013 by Andy Broad.