vulnerability
Amazon Linux AMI 2: CVE-2025-40909: Security patch for perl (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | May 30, 2025 | Jun 13, 2025 | May 20, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
May 30, 2025
Added
Jun 13, 2025
Modified
May 20, 2026
Description
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
Solutions
amazon-linux-ami-2-upgrade-perlamazon-linux-ami-2-upgrade-perl-coreamazon-linux-ami-2-upgrade-perl-cpanamazon-linux-ami-2-upgrade-perl-debuginfoamazon-linux-ami-2-upgrade-perl-develamazon-linux-ami-2-upgrade-perl-extutils-cbuilderamazon-linux-ami-2-upgrade-perl-extutils-embedamazon-linux-ami-2-upgrade-perl-extutils-installamazon-linux-ami-2-upgrade-perl-io-zlibamazon-linux-ami-2-upgrade-perl-libsamazon-linux-ami-2-upgrade-perl-locale-maketext-simpleamazon-linux-ami-2-upgrade-perl-macrosamazon-linux-ami-2-upgrade-perl-module-corelistamazon-linux-ami-2-upgrade-perl-module-loadedamazon-linux-ami-2-upgrade-perl-object-accessoramazon-linux-ami-2-upgrade-perl-package-constantsamazon-linux-ami-2-upgrade-perl-pod-escapesamazon-linux-ami-2-upgrade-perl-testsamazon-linux-ami-2-upgrade-perl-time-piece
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.