UnratedFix available
Fix CVE(s): CVE-2022-37966
Type: advisorySources: OSV
* SECURITY UPDATE: Kerberos KDC elevation of privilege via weak RC4 session keys - debian/patches/CVE-2022-37966.patch: prefer AES over RC4 for Kerberos session keys by selecting the session key from the server's advertised session etypes, strip weak keys from the krbtgt account, leave UF_USE_DES_KEY_ONLY accounts without usable keys as upstream does, declare RC4 support explicitly on trust objects created by samba-tool (upstream 84c28b05a0a), and add "kdc default domain supported enctypes", "kdc supported enctypes" and "kdc force enable rc4 weak session keys" options - debian/patches/CVE-2022-37966.patch: free the newly added sdb_entry etypes/session_etypes members, the calloc'ed etypes->val array, and the krbtgt keys discarded when the key list is truncated to one (upstream 75a1beeea85, a97aad91878, 149d4364299), avoiding a per-request KDC memory leak - debian/patches/CVE-2022-37966-domain-trust-modify.patch: add the upstream "samba-tool domain trust modify" command (upstream d1999c15, same CVE-2022-37966 series) so an administrator has a supported CLI to repair a pre-existing RC4-only trust after the change above stopped assuming RC4 support on trust objects - CVE-2022-37966
- Products
- ctdb, libnss-winbind, libpam-winbind, libparse-pidl-perl, libsmbclient, libsmbclient-dev, libwbclient-dev, libwbclient0, python-samba, registry-tools, samba, samba-common, samba-common-bin, samba-dev, samba-dsdb-modules, samba-libs, samba-testsuite, samba-vfs-modules, smbclient, winbind
- Affected versions
- Not specified
- Fixed versions
- 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
- CVEs
- CVE-2022-37966
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:42 UTC · Revision 1
Source evidence
* SECURITY UPDATE: Kerberos KDC elevation of privilege via weak RC4 session keys - debian/patches/CVE-2022-37966.patch: prefer AES over RC4 for Kerberos session keys by selecting the session key from the server's advertised session etypes, strip weak keys from the krbtgt account, leave UF_USE_DES_KEY_ONLY accounts without usable keys as upstream does, declare RC4 support explicitly on trust objects created by samba-tool (upstream 84c28b05a0a), and add "kdc default domain supported enctypes", "kdc supported enctypes" and "kdc force enable rc4 weak session keys" options - debian/patches/CVE-2022-37966.patch: free the newly added sdb_entry etypes/session_etypes members, the calloc'ed etypes->val array, and the krbtgt keys discarded when the key list is truncated to one (upstream 75a1beeea85, a97aad91878, 149d4364299), avoiding a per-request KDC memory leak - debian/patches/CVE-2022-37966-domain-trust-modify.patch: add the upstream "samba-tool domain trust modify" command (upstream d1999c15, same CVE-2022-37966 series) so an administrator has a supported CLI to repair a pre-existing RC4-only trust after the change above stopped assuming RC4 support on trust objects - CVE-2022-37966
osv:CLSA-2026-1788174820
ctdb
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libnss-winbind
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libpam-winbind
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libparse-pidl-perl
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libsmbclient
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libsmbclient-dev
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libwbclient-dev
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
libwbclient0
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
python-samba
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
registry-tools
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-common
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-common-bin
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-dev
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-dsdb-modules
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-libs
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-testsuite
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
samba-vfs-modules
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
smbclient
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
winbind
Fixed versions: 2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9
Complete source record
{
"id": "4f00afa05815547519e4a227af9084410d33072040b8cc0f479f7a16e1f3960b",
"url": "https://osv.dev/vulnerability/CLSA-2026-1788174820",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2022-37966",
"summary": "* SECURITY UPDATE: Kerberos KDC elevation of privilege via weak RC4 session keys - debian/patches/CVE-2022-37966.patch: prefer AES over RC4 for Kerberos session keys by selecting the session key from the server's advertised session etypes, strip weak keys from the krbtgt account, leave UF_USE_DES_KEY_ONLY accounts without usable keys as upstream does, declare RC4 support explicitly on trust objects created by samba-tool (upstream 84c28b05a0a), and add \"kdc default domain supported enctypes\", \"kdc supported enctypes\" and \"kdc force enable rc4 weak session keys\" options - debian/patches/CVE-2022-37966.patch: free the newly added sdb_entry etypes/session_etypes members, the calloc'ed etypes->val array, and the krbtgt keys discarded when the key list is truncated to one (upstream 75a1beeea85, a97aad91878, 149d4364299), avoiding a per-request KDC memory leak - debian/patches/CVE-2022-37966-domain-trust-modify.patch: add the upstream \"samba-tool domain trust modify\" command (upstream d1999c15, same CVE-2022-37966 series) so an administrator has a supported CLI to repair a pre-existing RC4-only trust after the change above stopped assuming RC4 support on trust objects - CVE-2022-37966",
"evidence": "osv:CLSA-2026-1788174820",
"products": [
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{
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}
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"affected_versions": []
},
{
"name": {
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{
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{
"name": {
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{
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"evidence": "/affected/4/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/5/package/name"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/6/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/7/package/name"
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"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-samba",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "registry-tools",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/9/ranges"
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/10/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-common",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/11/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-common-bin",
"evidence": "/affected/12/package/name"
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"prerequisites": [],
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{
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"evidence": "/affected/12/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "samba-dev",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-dsdb-modules",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-libs",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-testsuite",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba-vfs-modules",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/17/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "smbclient",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/18/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "winbind",
"evidence": "/affected/19/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9",
"evidence": "/affected/19/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1788174820",
"aliases": [
"CLSA-2026-1788174820"
],
"affected": [
{
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{
"type": "ECOSYSTEM",
"events": [
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},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "ctdb",
"purl": "pkg:deb/tuxcare/ctdb?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
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],
"package": {
"name": "libnss-winbind",
"purl": "pkg:deb/tuxcare/libnss-winbind?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
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{
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],
"package": {
"name": "libpam-winbind",
"purl": "pkg:deb/tuxcare/libpam-winbind?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
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}
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],
"package": {
"name": "libparse-pidl-perl",
"purl": "pkg:deb/tuxcare/libparse-pidl-perl?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
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],
"package": {
"name": "libsmbclient",
"purl": "pkg:deb/tuxcare/libsmbclient?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
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}
]
}
],
"package": {
"name": "libsmbclient-dev",
"purl": "pkg:deb/tuxcare/libsmbclient-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
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},
{
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}
]
}
],
"package": {
"name": "libwbclient-dev",
"purl": "pkg:deb/tuxcare/libwbclient-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
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},
{
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}
]
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],
"package": {
"name": "libwbclient0",
"purl": "pkg:deb/tuxcare/libwbclient0?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
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],
"package": {
"name": "python-samba",
"purl": "pkg:deb/tuxcare/python-samba?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
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},
{
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}
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}
],
"package": {
"name": "registry-tools",
"purl": "pkg:deb/tuxcare/registry-tools?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "samba",
"purl": "pkg:deb/tuxcare/samba?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
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}
]
}
],
"package": {
"name": "samba-common",
"purl": "pkg:deb/tuxcare/samba-common?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-common-bin",
"purl": "pkg:deb/tuxcare/samba-common-bin?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-dev",
"purl": "pkg:deb/tuxcare/samba-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-dsdb-modules",
"purl": "pkg:deb/tuxcare/samba-dsdb-modules?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-libs",
"purl": "pkg:deb/tuxcare/samba-libs?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-testsuite",
"purl": "pkg:deb/tuxcare/samba-testsuite?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "samba-vfs-modules",
"purl": "pkg:deb/tuxcare/samba-vfs-modules?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "smbclient",
"purl": "pkg:deb/tuxcare/smbclient?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+tuxcare.els9"
}
]
}
],
"package": {
"name": "winbind",
"purl": "pkg:deb/tuxcare/winbind?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788174820.json"
}
}
],
"modified": "2026-10-26T09:32:04.018889983Z",
"provider": "osv",
"upstream": [
"CVE-2022-37966"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1788174820.html",
"https://nvd.nist.gov/vuln/detail/CVE-2022-37966"
]
},
"related_cves": [
{
"value": "CVE-2022-37966",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449567,
"published_at": "2026-08-31T11:13:51+00:00"
}