usn-8464-1
Vulnerability from osv_ubuntu
Published
2026-06-23 14:57
Modified
2026-06-23 14:57
Summary
libnfs vulnerability
Details
It was discovered that LIBNFS incorrectly handled certain string sizes when connecting to an NFS server. An attacker could use this issue to cause LIBNFS to crash, resulting in a denial of service, or possibly execute arbitrary code.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-53689",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnfs-utils",
"binary_version": "4.0.0-1ubuntu0.1"
},
{
"binary_name": "libnfs13",
"binary_version": "4.0.0-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libnfs",
"purl": "pkg:deb/ubuntu/libnfs@4.0.0-1ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.0-1",
"4.0.0-1build1",
"4.0.0-1build2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-53689",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnfs-utils",
"binary_version": "5.0.2-1ubuntu0.24.04.1"
},
{
"binary_name": "libnfs14",
"binary_version": "5.0.2-1ubuntu0.24.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libnfs",
"purl": "pkg:deb/ubuntu/libnfs@5.0.2-1ubuntu0.24.04.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.2-1ubuntu0.24.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.0.0-1build2",
"5.0.2-1",
"5.0.2-1build1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-53689",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnfs-utils",
"binary_version": "5.0.2-1ubuntu0.25.10.1"
},
{
"binary_name": "libnfs14",
"binary_version": "5.0.2-1ubuntu0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libnfs",
"purl": "pkg:deb/ubuntu/libnfs@5.0.2-1ubuntu0.25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.2-1ubuntu0.25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.0.2-1build1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-53689",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnfs-utils",
"binary_version": "5.0.2-1ubuntu1.1"
},
{
"binary_name": "libnfs14",
"binary_version": "5.0.2-1ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "libnfs",
"purl": "pkg:deb/ubuntu/libnfs@5.0.2-1ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.2-1ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.0.2-1build1",
"5.0.2-1build2",
"5.0.2-1ubuntu1"
]
}
],
"aliases": [],
"details": "It was discovered that LIBNFS incorrectly handled certain string sizes when\nconnecting to an NFS server. An attacker could use this issue to cause\nLIBNFS to crash, resulting in a denial of service, or possibly execute\narbitrary code.",
"id": "USN-8464-1",
"modified": "2026-06-23T14:57:53Z",
"published": "2026-06-23T14:57:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8464-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-53689"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libnfs vulnerability",
"upstream": [
"UBUNTU-CVE-2026-53689"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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