Samba: vfs_worm does not block directory modification
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.
CVE-2026-2340
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-2340
Red Hat Enterprise Linux 10
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 10.0 Extended Update Support
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8
Source reference: /containers/cna/affected/3/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Source reference: /containers/cna/affected/4/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Source reference: /containers/cna/affected/5/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Source reference: /containers/cna/affected/6/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Source reference: /containers/cna/affected/7/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9
Source reference: /containers/cna/affected/8/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9
Source reference: /containers/cna/affected/9/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Source reference: /containers/cna/affected/10/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
Source reference: /containers/cna/affected/11/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 9.6 Extended Update Support
Source reference: /containers/cna/affected/12/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.12
Source reference: /containers/cna/affected/13/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.12
Source reference: /containers/cna/affected/14/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.13
Source reference: /containers/cna/affected/15/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.13
Source reference: /containers/cna/affected/16/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.14
Source reference: /containers/cna/affected/17/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.14
Source reference: /containers/cna/affected/18/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.15
Source reference: /containers/cna/affected/19/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.15
Source reference: /containers/cna/affected/20/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.16
Source reference: /containers/cna/affected/21/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.16
Source reference: /containers/cna/affected/22/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.17
Source reference: /containers/cna/affected/23/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.17
Source reference: /containers/cna/affected/24/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.18
Source reference: /containers/cna/affected/25/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.18
Source reference: /containers/cna/affected/26/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat OpenShift Container Platform 4.19
Source reference: /containers/cna/affected/27/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 6
Source reference: /containers/cna/affected/28/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 6
Source reference: /containers/cna/affected/29/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Red Hat Enterprise Linux 7
Source reference: /containers/cna/affected/30/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"cpes": [
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],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10",
"versions": [
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"status": "unaffected",
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{
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"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
"versions": [
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"version": "0:4.21.3-114.el10_0.1",
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}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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},
{
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"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
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],
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{
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"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8",
"versions": [
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"version": "0:4.19.4-16.el8_10",
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],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
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"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"versions": [
{
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"version": "0:4.15.5-16.el8_6.1",
"lessThan": "*",
"versionType": "rpm"
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],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6::appstream",
"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
"versions": [
{
"status": "unaffected",
"version": "0:4.15.5-16.el8_6.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
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"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
"versions": [
{
"status": "unaffected",
"version": "0:4.17.5-7.el8_8.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8::appstream",
"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:4.17.5-7.el8_8.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::resilientstorage",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:4.23.5-10.el9_8",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
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"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::resilientstorage",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9",
"versions": [
{
"status": "unaffected",
"version": "0:4.23.5-10.el9_8",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream",
"cpe:/a:redhat:rhel_e4s:9.2::resilientstorage",
"cpe:/o:redhat:rhel_e4s:9.2::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:4.17.5-105.el9_2.5",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
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{
"cpes": [
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"cpe:/a:redhat:rhel_e4s:9.4::resilientstorage",
"cpe:/o:redhat:rhel_e4s:9.4::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
"versions": [
{
"status": "unaffected",
"version": "0:4.19.4-105.el9_4.4",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
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"cpe:/a:redhat:rhel_eus:9.6::crb",
"cpe:/a:redhat:rhel_eus:9.6::resilientstorage",
"cpe:/o:redhat:rhel_eus:9.6::baseos"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
"versions": [
{
"status": "unaffected",
"version": "0:4.21.3-14.el9_6.1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.12::el8"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.12",
"versions": [
{
"status": "unaffected",
"version": "412.86.202608241157-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.12::el8"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.12",
"versions": [
{
"status": "unaffected",
"version": "412.86.202609082051-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-8",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.13::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.13",
"versions": [
{
"status": "unaffected",
"version": "413.92.202609080414-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.13::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.13",
"versions": [
{
"status": "unaffected",
"version": "413.92.202609302032-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.14::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.14",
"versions": [
{
"status": "unaffected",
"version": "414.92.202608172040-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.14::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.14",
"versions": [
{
"status": "unaffected",
"version": "414.92.202609011250-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.15::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.15",
"versions": [
{
"status": "unaffected",
"version": "415.92.202608180329-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.15::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.15",
"versions": [
{
"status": "unaffected",
"version": "415.92.202609140326-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.16::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.16",
"versions": [
{
"status": "unaffected",
"version": "416.94.202608150307-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.16::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.16",
"versions": [
{
"status": "unaffected",
"version": "416.94.202609011112-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.17::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.17",
"versions": [
{
"status": "unaffected",
"version": "417.94.202608250221-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.17::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.17",
"versions": [
{
"status": "unaffected",
"version": "417.94.202609191027-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.18::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.18",
"versions": [
{
"status": "unaffected",
"version": "418.94.202608142238-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.18::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.18",
"versions": [
{
"status": "unaffected",
"version": "418.94.202609031320-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4.19::el9"
],
"vendor": "Red Hat",
"product": "Red Hat OpenShift Container Platform 4.19",
"versions": [
{
"status": "unaffected",
"version": "4.19.9.6.202606241344-0",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "openshift/ose-rhel-coreos-9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 6",
"packageName": "samba4",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unknown"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:7"
],
"vendor": "Red Hat",
"product": "Red Hat Enterprise Linux 7",
"packageName": "samba",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-2340
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #29866 · Revision 1
- Added to Heist Feed
- Publisher date