USN-8464-1

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Source
https://ubuntu.com/security/notices/USN-8464-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8464-1
Upstream
Related
Published
2026-06-23T14:57:53Z
Modified
2026-06-23T22:14:21.910357100Z
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

Affected packages

Ubuntu:22.04:LTS / libnfs

Package

Name
libnfs
Purl
pkg:deb/ubuntu/libnfs?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.0-1ubuntu0.1

Affected versions

4.*
4.0.0-1
4.0.0-1build1
4.0.0-1build2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.0.0-1ubuntu0.1",
            "binary_name": "libnfs-utils"
        },
        {
            "binary_version": "4.0.0-1ubuntu0.1",
            "binary_name": "libnfs13"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"
cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-53689"
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}

Ubuntu:24.04:LTS / libnfs

Package

Name
libnfs
Purl
pkg:deb/ubuntu/libnfs?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.2-1ubuntu0.24.04.1

Affected versions

4.*
4.0.0-1build2
5.*
5.0.2-1
5.0.2-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.0.2-1ubuntu0.24.04.1",
            "binary_name": "libnfs-utils"
        },
        {
            "binary_version": "5.0.2-1ubuntu0.24.04.1",
            "binary_name": "libnfs14"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"
cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-53689"
        }
    ],
    "ecosystem": "Ubuntu:24.04:LTS"
}

Ubuntu:25.10 / libnfs

Package

Name
libnfs
Purl
pkg:deb/ubuntu/libnfs?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.2-1ubuntu0.25.10.1

Affected versions

5.*
5.0.2-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.0.2-1ubuntu0.25.10.1",
            "binary_name": "libnfs-utils"
        },
        {
            "binary_version": "5.0.2-1ubuntu0.25.10.1",
            "binary_name": "libnfs14"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"
cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-53689"
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}

Ubuntu:26.04:LTS / libnfs

Package

Name
libnfs
Purl
pkg:deb/ubuntu/libnfs?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.0.2-1ubuntu1.1

Affected versions

5.*
5.0.2-1build1
5.0.2-1build2
5.0.2-1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "5.0.2-1ubuntu1.1",
            "binary_name": "libnfs-utils"
        },
        {
            "binary_version": "5.0.2-1ubuntu1.1",
            "binary_name": "libnfs14"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8464-1.json"
cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2026-53689"
        }
    ],
    "ecosystem": "Ubuntu:26.04:LTS"
}