Bug 2447317 (CVE-2026-1933)
| Summary: | CVE-2026-1933 samba: Missing access check on reparse point operations | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, security-response-team, sghai, sidsharm, suppawar, villapla, vlaad, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2481876 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-03-13 13:05:10 UTC
Embargo Lifted. The CVE is now public. https://www.samba.org/samba/security/CVE-2026-1933.html https://bugzilla.samba.org/show_bug.cgi?id=15992 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:22963 https://access.redhat.com/errata/RHSA-2026:22963 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:25049 https://access.redhat.com/errata/RHSA-2026:25049 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:25979 https://access.redhat.com/errata/RHSA-2026:25979 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Via RHSA-2026:28057 https://access.redhat.com/errata/RHSA-2026:28057 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:28056 https://access.redhat.com/errata/RHSA-2026:28056 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:28055 https://access.redhat.com/errata/RHSA-2026:28055 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:28054 https://access.redhat.com/errata/RHSA-2026:28054 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Via RHSA-2026:28053 https://access.redhat.com/errata/RHSA-2026:28053 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.19 Via RHSA-2026:29863 https://access.redhat.com/errata/RHSA-2026:29863 PSIRTSUPT-20948: TAM flagged that OCP 4.20 was missing from the CVE page. Investigation confirmed that active streams openshift-4.20, openshift-4.21, and openshift-4.22 had no affects filed, despite shipping the same vulnerable samba RPMs via RHCOS (RHEL 9.6 base). Added AFFECTED/DELEGATED affects for all three streams to match the existing pattern (openshift-4.12.z through openshift-4.19). This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.21 Via RHSA-2026:54599 https://access.redhat.com/errata/RHSA-2026:54599 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.20 Via RHSA-2026:54581 https://access.redhat.com/errata/RHSA-2026:54581 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.22 Via RHSA-2026:54769 https://access.redhat.com/errata/RHSA-2026:54769 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.18 Via RHSA-2026:57483 https://access.redhat.com/errata/RHSA-2026:57483 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.15 Via RHSA-2026:56911 https://access.redhat.com/errata/RHSA-2026:56911 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.14 Via RHSA-2026:56786 https://access.redhat.com/errata/RHSA-2026:56786 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.16 Via RHSA-2026:56853 https://access.redhat.com/errata/RHSA-2026:56853 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.17 Via RHSA-2026:60019 https://access.redhat.com/errata/RHSA-2026:60019 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.12 Via RHSA-2026:59831 https://access.redhat.com/errata/RHSA-2026:59831 |