Upstream information
Description
Perl versions from 5.9.4 before 5.41.9 produce incorrect regular expression match results when a stale failure flag ends the Aho-Corasick prescan early in S_find_byclass.The prescan walks the subject for positions where the full pattern could match, and the engine tries it from the leftmost one recorded. A failing transition sets the failed flag, and a later successful transition does not clear it, so the prescan reads the stale flag as a failure and stops before it can record a candidate that starts earlier. It takes a subject where one candidate is recorded and a later character then forces a fallback through a fail link that succeeds.
Example:
"ABCDE" =~ m/ABCF|BCDE|C/; # matches C at offset 2, not BCDE
"ABCDE" =~ m/ABCF|BCDE|C(G)/; # no match, BCDE missed
An alternation like this can miss input it should match, or match it on the wrong branch, so an access or filtering decision made from the result can be wrong.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (CISA-ADP) | SUSE |
|---|---|---|
| Base Score | 5.3 | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | Low |
| Availability Impact | Low | None |
| CVSSv3 Version | 3.1 | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SLES15-SP5-CHOST-BYOS-SAP-CCloud | perl | Affected |
| SLES15-SP6-CHOST-BYOS | perl | Affected |
| SLES15-SP6-CHOST-BYOS-Aliyun | perl | Affected |
| SLES15-SP6-CHOST-BYOS-Azure | perl | Affected |
| SLES15-SP6-CHOST-BYOS-EC2 | perl | Affected |
| SLES15-SP6-CHOST-BYOS-GCE | perl | Affected |
| SLES15-SP6-CHOST-BYOS-GDC | perl | Affected |
| SLES15-SP6-CHOST-BYOS-SAP-CCloud | perl | Affected |
| SLES15-SP7-CHOST-BYOS-Aliyun | perl | Affected |
| SLES15-SP7-CHOST-BYOS-Azure | perl | Affected |
| SLES15-SP7-CHOST-BYOS-EC2 | perl | Affected |
| SLES15-SP7-CHOST-BYOS-GCE | perl | Affected |
| SLES15-SP7-CHOST-BYOS-GDC | perl | Affected |
| SLES15-SP7-CHOST-BYOS-SAP-CCloud | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP7 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Micro 5.3 | perl | Affected |
| SUSE Linux Enterprise Micro 5.4 | perl | Affected |
| SUSE Linux Enterprise Micro 5.5 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Server 16.0 | perl | Not affected |
| SUSE Linux Enterprise Server 16.1 | perl | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | perl | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | perl | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | perl | Already fixed |
| SUSE Linux Micro 6.0 | perl | Affected |
| SUSE Linux Micro 6.1 | perl | Affected |
| SUSE Linux Micro 6.2 | perl | Not affected |
| openSUSE Leap 16.0 | perl | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SLES15-SP3-CHOST-BYOS-Aliyun | perl | Affected |
| SLES15-SP3-CHOST-BYOS-Azure | perl | Affected |
| SLES15-SP3-CHOST-BYOS-EC2 | perl | Affected |
| SLES15-SP3-CHOST-BYOS-GCE | perl | Affected |
| SLES15-SP3-CHOST-BYOS-SAP-CCloud | perl | Affected |
| SLES15-SP4-CHOST-BYOS | perl | Affected |
| SLES15-SP4-CHOST-BYOS-Aliyun | perl | Affected |
| SLES15-SP4-CHOST-BYOS-Azure | perl | Affected |
| SLES15-SP4-CHOST-BYOS-EC2 | perl | Affected |
| SLES15-SP4-CHOST-BYOS-GCE | perl | Affected |
| SLES15-SP4-CHOST-BYOS-SAP-CCloud | perl | Affected |
| SLES15-SP5-CHOST-BYOS-Aliyun | perl | Affected |
| SLES15-SP5-CHOST-BYOS-Azure | perl | Affected |
| SLES15-SP5-CHOST-BYOS-EC2 | perl | Affected |
| SLES15-SP5-CHOST-BYOS-GCE | perl | Affected |
| SLES15-SP5-CHOST-BYOS-GDC | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP5 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP6 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP5 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | perl | Affected |
| SUSE Linux Enterprise Server 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15 SP6 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | perl | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | perl | Affected |
| SUSE Manager Proxy 4.3 | perl | Affected |
| SUSE Manager Proxy LTS 4.3 | perl | Affected |
| SUSE Manager Retail Branch Server 4.3 | perl | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | perl | Affected |
| SUSE Manager Server 4.3 | perl | Affected |
| SUSE Manager Server LTS 4.3 | perl | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | perl | Affected |
| SUSE CaaS Platform 3.0 | perl | Affected |
| SUSE CaaS Platform 4.0 | perl | Affected |
| SUSE Enterprise Storage 6 | perl | Affected |
| SUSE Enterprise Storage 7 | perl | Affected |
| SUSE Enterprise Storage 7.1 | perl | Affected |
| SUSE Linux Enterprise Desktop 12 | perl | Affected |
| SUSE Linux Enterprise Desktop 12 SP1 | perl | Affected |
| SUSE Linux Enterprise Desktop 12 SP2 | perl | Affected |
| SUSE Linux Enterprise Desktop 12 SP3 | perl | Affected |
| SUSE Linux Enterprise Desktop 12 SP4 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP1 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP2 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | perl | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | perl | Affected |
| SUSE Linux Enterprise Micro 5.0 | perl | Affected |
| SUSE Linux Enterprise Micro 5.1 | perl | Affected |
| SUSE Linux Enterprise Micro 5.2 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | perl | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | perl | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | perl | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | perl | Affected |
| SUSE Linux Enterprise Server 12 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP1 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP1-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP2 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | perl | Affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP3 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | perl | Affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP4 | perl | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | perl | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 12-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | perl | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | perl | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15 SP3 | perl | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | perl | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | perl | Affected |
| SUSE Linux Enterprise Server 15-LTSS | perl | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | perl | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | perl | Affected |
| SUSE Manager Proxy 4.0 | perl | Affected |
| SUSE Manager Proxy 4.1 | perl | Affected |
| SUSE Manager Proxy 4.2 | perl | Affected |
| SUSE Manager Retail Branch Server 4.0 | perl | Affected |
| SUSE Manager Retail Branch Server 4.1 | perl | Affected |
| SUSE Manager Retail Branch Server 4.2 | perl | Affected |
| SUSE Manager Server 4.0 | perl | Affected |
| SUSE Manager Server 4.1 | perl | Affected |
| SUSE Manager Server 4.2 | perl | Affected |
| SUSE OpenStack Cloud 7 | perl | Affected |
| SUSE OpenStack Cloud 8 | perl | Affected |
| SUSE OpenStack Cloud 9 | perl | Affected |
| SUSE OpenStack Cloud Crowbar 8 | perl | Affected |
| SUSE OpenStack Cloud Crowbar 9 | perl | Affected |
| openSUSE Leap 15.3 | perl | Affected |
| openSUSE Leap 15.4 | perl | Affected |
| openSUSE Leap 15.5 | perl | Affected |
| openSUSE Leap 15.6 | perl | Affected |
| openSUSE Leap Micro 5.2 | perl | Affected |
| openSUSE Leap Micro 5.3 | perl | Affected |
| openSUSE Leap Micro 5.4 | perl | Affected |
| openSUSE Leap Micro 5.5 | perl | Affected |
| Products at an unknown state of their lifecycle. | ||
| SLES-CHOST-BYOS-Aliyun | perl | Not affected |
| SLES-CHOST-BYOS-Azure | perl | Not affected |
| SLES-CHOST-BYOS-EC2 | perl | Not affected |
| SLES-CHOST-BYOS-GCE | perl | Not affected |
| SLES-CHOST-BYOS-GDC | perl | Not affected |
| SLES-CHOST-BYOS-SAP-CCloud | perl | Not affected |
| Container Status | ||
| bci/dotnet-aspnet:5.0 bci/dotnet-runtime:5.0 bci/dotnet-sdk:5.0 bci/spack bci/spack:0.23 containers/lmcache-lmstack-router:0 containers/open-webui-pipelines:0 private-registry/1.2/harbor-portal private-registry/harbor-nginx private-registry/harbor-portal ses/7.1/ceph/haproxy ses/7.1/ceph/keepalived suse/kiosk/firefox-esr suse/kiosk/firefox-esr:esr suse/kiosk/tigervnc-x11vnc suse/kiosk/xorg suse/kiosk/xorg-client suse/kiosk/xorg:21 suse/manager/5.0/x86_64/server suse/manager/5.0/x86_64/server-migration-14-16 suse/mariadb suse/mariadb:10.11 suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.1/x86_64/server-migration-14-16 suse/multi-linux-manager/5.2/x86_64/server suse/multi-linux-manager/5.2/x86_64/server-database-migration suse/nginx suse/nginx:1.21 suse/pcp suse/pcp:5 suse/pcp:6 suse/postgres suse/postgres:16.14 suse/postgres:17.10 suse/registry suse/registry:2.8 suse/rmt-mariadb suse/rmt-nginx suse/sle-micro/5.0/toolbox suse/sle-micro/5.1/toolbox suse/sle-micro/5.2/toolbox suse/sle-micro/5.3/toolbox suse/sle-micro/5.4/toolbox suse/sle-micro/5.5 suse/sle-micro/5.5/toolbox suse/sle-micro/rt-5.5 suse/sles/15.2/virt-launcher:0.38.1 suse/sles/15.3/libguestfs-tools:0.45.0 suse/sles/15.3/virt-launcher:0.45.0 suse/sles/15.4/libguestfs-tools:0.49.0 suse/sles/15.4/virt-launcher:0.49.0 suse/sles/15.6/libguestfs-tools:1.1.1 suse/sles/15.7/libguestfs-tools:1.5.0 third-party/nvidia/driver:550-sles15.7 third-party/nvidia/driver:570-sles15.7 third-party/nvidia/driver:575-sles15.7 third-party/nvidia/driver:580-sles15.7 third-party/nvidia/driver:590-sles15.7 third-party/nvidia/driver:595-sles15.7 | perl | Affected |
| kiwi-templates-Minimal kiwi-templates-Minimal-Cloud-sap kiwi-templates-Minimal-MS-HyperV-sap kiwi-templates-Minimal-VMware-sap kiwi-templates-Minimal-kvm-and-xen-sap suse/sles-16.1-kubevirt-minimal suse/sles/16.0/toolbox | perl | Not affected |
SUSE Timeline for this CVE
CVE page created: Mon Aug 17 16:28:42 2026CVE page last modified: Mon Aug 17 17:29:09 2026