HighFix available
linux — security advisory
A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.
- Products
- linux
- Affected versions
- 6.1.27-1, 6.1.37-1, 6.1.38-1, 6.1.38-2, 6.1.38-2~bpo11+1, 6.1.38-3, 6.1.38-4, 6.1.38-4~bpo11+1, 6.1.52-1, 6.1.55-1~bpo11+1
- Fixed versions
- 6.1.55-1, 6.5.3-1
- CVEs
- CVE-2023-39180
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:49 UTC · Revision 1
Source evidence
A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.
osv:DEBIAN-CVE-2023-39180
linux
Fixed versions: 6.1.55-1
linux
Fixed versions: 6.5.3-1
linux
Fixed versions: 6.5.3-1
Complete source record
{
"id": "5e8d79baa3539712131750817f2ebf677361095eea34ca11433e529cb24e6d29",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-39180",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-39180",
"summary": "A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.",
"evidence": "osv:DEBIAN-CVE-2023-39180",
"products": [
{
"name": {
"value": "linux",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.1.55-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "6.1.27-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.37-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-3",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-4",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/1/ranges"
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],
"severity": "high",
"structured": {
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"aliases": [
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"metrics": [
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}
],
"affected": [
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{
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],
"package": {
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"ecosystem": "Debian:12"
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"6.1.38-3",
"6.1.38-4",
"6.1.38-4~bpo11+1",
"6.1.52-1",
"6.1.55-1~bpo11+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-39180.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
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"events": [
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{
"fixed": "6.5.3-1"
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],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-39180.json"
},
"ecosystem_specific": {
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}
},
{
"ranges": [
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{
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],
"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-39180.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:02:00.334706825Z",
"provider": "osv",
"upstream": [
"CVE-2023-39180"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-39180"
]
},
"related_cves": [
{
"value": "CVE-2023-39180",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 455800,
"published_at": "2024-11-18T10:15:05.217+00:00"
}