UnratedFix available
samba: Fix of CVE-2023-4091
Type: advisorySources: OSV
- CVE-2023-4091: fix open_file() access check that allowed a client with read-only share access to truncate files via SMB2 OVERWRITE; the access check now uses open_access_mask instead of the requested access_mask
- Products
- ctdb, ctdb-tests, libsmbclient, libsmbclient-devel, libwbclient, libwbclient-devel, samba, samba-client, samba-client-libs, samba-common, samba-common-libs, samba-common-tools, samba-dc, samba-dc-libs, samba-devel, samba-krb5-printing, samba-libs, samba-pidl, samba-python, samba-python-test, samba-test, samba-test-libs, samba-vfs-glusterfs, samba-winbind, samba-winbind-clients, samba-winbind-krb5-locator, samba-winbind-modules
- Affected versions
- Not specified
- Fixed versions
- 4.10.16-25.el7_9.tuxcare.els5
- CVEs
- CVE-2023-4091
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:00 UTC · Revision 1
Source evidence
- CVE-2023-4091: fix open_file() access check that allowed a client with read-only share access to truncate files via SMB2 OVERWRITE; the access check now uses open_access_mask instead of the requested access_mask
osv:CLSA-2026-1779132536
ctdb
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
ctdb-tests
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
libsmbclient
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
libsmbclient-devel
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
libwbclient
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
libwbclient-devel
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-client
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-client-libs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-common
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-common-libs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-common-tools
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-dc
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-dc-libs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-devel
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-krb5-printing
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-libs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-pidl
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-python
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-python-test
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-test
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-test-libs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-vfs-glusterfs
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-winbind
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-winbind-clients
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-winbind-krb5-locator
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
samba-winbind-modules
Fixed versions: 4.10.16-25.el7_9.tuxcare.els5
Complete source record
{
"id": "266b53332560f902be31d449de0e9e8e74316ab24c4b1a47ac157aa5ad26f65e",
"url": "https://osv.dev/vulnerability/CLSA-2026-1779132536",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "samba: Fix of CVE-2023-4091",
"summary": "- CVE-2023-4091: fix open_file() access check that allowed a client with read-only share access to truncate files via SMB2 OVERWRITE; the access check now uses open_access_mask instead of the requested access_mask",
"evidence": "osv:CLSA-2026-1779132536",
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{
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{
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"evidence": "/affected/8/package/name"
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{
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"evidence": "/affected/9/package/name"
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{
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/11/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/11/ranges"
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],
"affected_versions": []
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{
"name": {
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"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/12/ranges"
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],
"affected_versions": []
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{
"name": {
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"evidence": "/affected/13/package/name"
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/14/package/name"
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"prerequisites": [],
"fixed_versions": [
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"evidence": "/affected/14/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-krb5-printing",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
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{
"name": {
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"evidence": "/affected/16/package/name"
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{
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"evidence": "/affected/16/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-pidl",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/17/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-python",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/18/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-python-test",
"evidence": "/affected/19/package/name"
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{
"name": {
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"evidence": "/affected/21/package/name"
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{
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"evidence": "/affected/21/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-vfs-glusterfs",
"evidence": "/affected/22/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/22/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-winbind",
"evidence": "/affected/23/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/23/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-winbind-clients",
"evidence": "/affected/24/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/24/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-winbind-krb5-locator",
"evidence": "/affected/25/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.16-25.el7_9.tuxcare.els5",
"evidence": "/affected/25/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/26/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/26/ranges"
}
],
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],
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"aliases": [
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],
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{
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],
"package": {
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"ecosystem": "TuxCare:CentOS:7"
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},
{
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"package": {
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],
"package": {
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},
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"package": {
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"package": {
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}
},
{
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],
"package": {
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"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
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],
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},
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{
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],
"package": {
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"ecosystem": "TuxCare:CentOS:7"
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],
"package": {
"name": "samba-dc",
"purl": "pkg:rpm/tuxcare/samba-dc?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
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}
},
{
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]
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],
"package": {
"name": "samba-dc-libs",
"purl": "pkg:rpm/tuxcare/samba-dc-libs?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1779132536.json"
}
},
{
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{
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},
{
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]
}
],
"package": {
"name": "samba-devel",
"purl": "pkg:rpm/tuxcare/samba-devel?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1779132536.json"
}
},
{
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{
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}
]
}
],
"package": {
"name": "samba-krb5-printing",
"purl": "pkg:rpm/tuxcare/samba-krb5-printing?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1779132536.json"
}
},
{
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{
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{
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{
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}
]
}
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{
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}
}
],
"modified": "2026-10-26T09:31:41.105605245Z",
"provider": "osv",
"upstream": [
"CVE-2023-4091"
],
"references": [
"https://errata.tuxcare.com/els_os/centos7els/CLSA-2026-1779132536.html"
]
},
"related_cves": [
{
"value": "CVE-2023-4091",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448095,
"published_at": "2026-05-21T10:24:36+00:00"
}