CVE catalog
CVE-2025-40909
Perl vulnerability
- Severity
- Medium · CVSS 6.2
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.50% · Oct 25, 2026
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
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | perl | sid | 5.42.3-1 | fixed |
| Debian | perl | forky | 5.42.3-1 | fixed |
| Debian | perl | trixie | 5.40.1-6+deb13u1 | fixed |
| Debian | perl | bookworm | 5.36.0-7+deb12u3 | fixed |
| Debian | perl | bookworm-security | 5.36.0-7+deb12u4 | fixed |
| Ubuntu | perl | noble | 5.36.0-7+deb12u3 | fixed |
| Ubuntu | perl | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | libperl-dev | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | libperl5.38t64 | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl-base | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl-debug | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl-doc | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl-modules-5.38 | noble | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl | pro | 5.28.1-6build1 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-7 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9build1 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.2 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.3 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.4 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.5 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.5+esm2 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.5+esm3 | vulnerable |
| Ubuntu | perl | pro | 5.30.0-9ubuntu0.5+esm4 | vulnerable |
| Ubuntu | perl | 22.04 | 5.32.1-3ubuntu3 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.1 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.2 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.3 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.4 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.5 | fixed |
| Ubuntu | perl | 24.04 | 5.36.0-9ubuntu1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.36.0-10ubuntu1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build2 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build2.1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2ubuntu0.1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2ubuntu0.2 | fixed |
| Ubuntu | perl | 22.04 | 5.32.1-3ubuntu3 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.1 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.2 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.3 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.4 | vulnerable |
| Ubuntu | perl | 22.04 | 5.34.0-3ubuntu1.5 | fixed |
| Ubuntu | perl | 24.04 | 5.36.0-9ubuntu1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.36.0-10ubuntu1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build2 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2build2.1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2ubuntu0.1 | vulnerable |
| Ubuntu | perl | 24.04 | 5.38.2-3.2ubuntu0.2 | fixed |
| Opensuse | perl | tumbleweed | 5.40.2-3.1 | fixed |
| Suse | perl | linux micro 6.0 | 5.38.2-4.1 | fixed |
| Suse | perl | linux enterprise micro 5.3 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise micro 5.4 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise micro 5.5 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for basesystem 15 sp6 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for basesystem 15 sp7 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for development tools 15 sp6 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for development tools 15 sp7 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for package hub 15 sp6 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise module for package hub 15 sp7 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise micro 5.1 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise micro 5.2 | 5.26.1-150300.17.20.1 | fixed |
| Opensuse | perl | leap 15.6 | 5.26.1-150300.17.20.1 | fixed |
| Suse | perl | linux enterprise server ltss extended security 12 sp5 | 5.18.2-12.29.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | perl | source | sid | 5.40.1-5 | not yet assigned | Not reported | [1098226] |
| Debian | perl | source | forky | 5.40.1-5 | not yet assigned | Not reported | [1098226] |
| Debian | perl | source | trixie | 5.40.1-5 | not yet assigned | Not reported | [1098226] |
| Debian | perl | source | bookworm | 5.36.0-7+deb12u3 | not yet assigned | Not reported | [1098226] |
| Ubuntu | perl | deb | noble | 5.36.0-7+deb12u3 | Not reported | Not reported | Not reported |
| Ubuntu | perl | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | libperl-dev | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | libperl5.38t64 | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | perl-base | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | perl-debug | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | perl-doc | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | perl-modules-5.38 | deb | noble | 5.38.2-3.2ubuntu0.2 | Not reported | Not reported | Not reported |
| Ubuntu | perl | deb | 22.04 | 5.34.0-3ubuntu1.5 | Not reported | UBUNTU-CVE-2025-40909 | Not reported |
| Ubuntu | perl | deb | 24.04 | 5.38.2-3.2ubuntu0.2 | Not reported | UBUNTU-CVE-2025-40909 | Not reported |
| Ubuntu | perl | deb | 22.04 | 5.34.0-3ubuntu1.5 | Not reported | USN-7678-1 | Not reported |
| Ubuntu | perl | deb | 24.04 | 5.38.2-3.2ubuntu0.2 | Not reported | USN-7678-1 | Not reported |
| Opensuse | perl | rpm | tumbleweed | 5.40.2-3.1 | Not reported | OPENSUSE-SU-2025:15258-1 | Not reported |
| Suse | perl | rpm | linux micro 6.0 | 5.38.2-4.1 | Not reported | SUSE-SU-2025:20456-1 | Not reported |
| Suse | perl | rpm | linux enterprise micro 5.3 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise micro 5.4 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise micro 5.5 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for basesystem 15 sp6 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for basesystem 15 sp7 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for development tools 15 sp6 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for development tools 15 sp7 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for package hub 15 sp6 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise module for package hub 15 sp7 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise micro 5.1 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise micro 5.2 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Opensuse | perl | rpm | leap 15.6 | 5.26.1-150300.17.20.1 | Not reported | SUSE-SU-2025:02027-1 | Not reported |
| Suse | perl | rpm | linux enterprise server ltss extended security 12 sp5 | 5.18.2-12.29.1 | Not reported | SUSE-SU-2025:02051-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libperl5.36]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· amd64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· arm64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· amd64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· arm64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [libperl-dev]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· amd64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· arm64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· amd64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· arm64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [perl]Affected
Details (4)
5.36.0-7+deb12u3· amd64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· arm64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· amd64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· arm64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [perl-base]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· amd64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· arm64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· amd64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· arm64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [perl-debug]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· amd64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· arm64 · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· amd64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· arm64 · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [perl-doc]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· all · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· all · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· all · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· all · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
- [perl-modules-5.36]Affected
Source package: [perl]
Details (4)
5.36.0-7+deb12u3· all · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u3· all · bookwormFixed · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· all · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
5.36.0-7+deb12u2· all · bookworm-securityAffected · Fixed:
5.36.0-7+deb12u3usn · perl · debian · bookworm; usn · perl · debian · 12
[openSUSE Tumbleweed]
- [perl-32bit]Unknown
Source package: [perl]
Details (1)
5.44.0-1.2· x86_64 · tumbleweedUnknown · Fixed:
5.40.2-3.1Version impact unknown
usn · perl · opensuse · tumbleweed
- [perl-base]Unknown
Source package: [perl]
Details (1)
5.44.0-1.2· x86_64 · tumbleweedUnknown · Fixed:
5.40.2-3.1Version impact unknown
usn · perl · opensuse · tumbleweed
- [perl-base-32bit]Unknown
Source package: [perl]
Details (1)
5.44.0-1.2· x86_64 · tumbleweedUnknown · Fixed:
5.40.2-3.1Version impact unknown
usn · perl · opensuse · tumbleweed
- [perl-doc]Unknown
Source package: [perl]
Details (1)
5.44.0-1.2· noarch · tumbleweedUnknown · Fixed:
5.40.2-3.1Version impact unknown
usn · perl · opensuse · tumbleweed
- [perl]Fixed
Source package: [perl]
Details (1)
5.44.0-1.2· x86_64 · tumbleweedFixed · Fixed:
5.40.2-3.1usn · perl · opensuse · tumbleweed
[Debian 13 (Trixie)]
- [libperl5.40]Fixed
Source package: [perl]
Details (2)
5.40.1-6· amd64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· arm64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [libperl-dev]Fixed
Source package: [perl]
Details (2)
5.40.1-6· amd64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· arm64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [perl]Fixed
Details (2)
5.40.1-6· amd64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· arm64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [perl-base]Fixed
Source package: [perl]
Details (2)
5.40.1-6· amd64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· arm64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [perl-debug]Fixed
Source package: [perl]
Details (2)
5.40.1-6· amd64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· arm64 · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [perl-doc]Fixed
Source package: [perl]
Details (2)
5.40.1-6· all · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· all · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
- [perl-modules-5.40]Fixed
Source package: [perl]
Details (2)
5.40.1-6· all · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
5.40.1-6· all · trixieFixed · Fixed:
5.40.1-5usn · perl · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2025_11805.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-40909]
- [https://osv.dev/vulnerability/SUSE-SU-2025:02027-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:02051-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:20456-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-40909]
- [https://osv.dev/vulnerability/USN-7678-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:15258-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-40909]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40909.json]
- [https://ubuntu.com/security/notices/USN-7678-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-1206.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]