Description
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
Affected products
samba: samba; redhat: openshift container platform; redhat: enterprise linux
References10
- bugzilla.samba.org/show_bug.cgi?id=15997 Issue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:22644 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:22963 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:25049 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:25979 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:28053 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:28054 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:28055 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:28056 Third Party Advisory
- access.redhat.com/errata/RHSA-2026:28057 Third Party Advisory
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - EPSS — exploit probability
- 1% percentile: 62 · as of 14 November 2026
- CWE
- CWE-280
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