UnratedFix available
samba: Fix of CVE-2021-43566
Type: advisorySources: OSV
- CVE-2021-43566: fix mkdir_internal() symlink race that allowed an SMB1 or NFS client to create a directory outside the exported share; pin the parent via vfs_ChDir() and validate the relative path before SMB_VFS_MKDIR()
- 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
- 4.10.16-25.0.9.el7_9.tuxcare.els9
- CVEs
- CVE-2021-43566
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:24 UTC · Revision 1
Source evidence
- CVE-2021-43566: fix mkdir_internal() symlink race that allowed an SMB1 or NFS client to create a directory outside the exported share; pin the parent via vfs_ChDir() and validate the relative path before SMB_VFS_MKDIR()
osv:CLSA-2026-1780134251
ctdb
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
ctdb-tests
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
libsmbclient
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
libsmbclient-devel
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
libwbclient
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
libwbclient-devel
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-client
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-client-libs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-common
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-common-libs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-common-tools
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-dc
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-dc-libs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-devel
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-krb5-printing
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-libs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-pidl
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-python
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-python-test
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-test
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-test-libs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-vfs-glusterfs
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-winbind
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-winbind-clients
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-winbind-krb5-locator
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
samba-winbind-modules
Fixed versions: 4.10.16-25.0.9.el7_9.tuxcare.els9
Complete source record
{
"id": "b043ed8c98fc6db948232ca8e2bdb19edf4925a764bc5f53aaf675b0c517da47",
"url": "https://osv.dev/vulnerability/CLSA-2026-1780134251",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "samba: Fix of CVE-2021-43566",
"summary": "- CVE-2021-43566: fix mkdir_internal() symlink race that allowed an SMB1 or NFS client to create a directory outside the exported share; pin the parent via vfs_ChDir() and validate the relative path before SMB_VFS_MKDIR()",
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],
"package": {
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"purl": "pkg:rpm/tuxcare/samba-dc?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
},
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"package": {
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"purl": "pkg:rpm/tuxcare/samba-dc-libs?distro=oraclelinux-7",
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"database_specific": {
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],
"package": {
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"purl": "pkg:rpm/tuxcare/samba-devel?distro=oraclelinux-7",
"ecosystem": "TuxCare:OracleLinux:7"
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],
"modified": "2026-10-26T09:31:53.830752522Z",
"provider": "osv",
"upstream": [
"CVE-2021-43566"
],
"references": [
"https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1780134251.html"
]
},
"related_cves": [
{
"value": "CVE-2021-43566",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448885,
"published_at": "2026-05-30T09:44:15+00:00"
}