UBUNTU-CVE-2026-53689

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Source
https://ubuntu.com/security/CVE-2026-53689
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-53689
Upstream
Downstream
Related
Published
2026-06-11T00:00:00Z
Modified
2026-06-23T22:00:08.670044140Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfszdrstring in lib/libnfs-zdr.c.

References

Affected packages

Ubuntu:16.04:LTS
libnfs

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.9.7-2
1.9.8-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnfs8",
            "binary_version": "1.9.8-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
Ubuntu:18.04:LTS
libnfs

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.11.0-2
1.11.0-3
2.*
2.0.0-1~exp1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnfs11",
            "binary_version": "2.0.0-1~exp1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
Ubuntu:20.04:LTS
libnfs

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.0-2ubuntu1
4.*
4.0.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnfs-utils",
            "binary_version": "4.0.0-1"
        },
        {
            "binary_name": "libnfs13",
            "binary_version": "4.0.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
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 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
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 

{
    "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
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 

{
    "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"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"
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 

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

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53689.json"