UBUNTU-CVE-2026-65609

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Source
https://ubuntu.com/security/CVE-2026-65609
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-65609
Upstream
Published
2026-08-19T14:17:00Z
Modified
2026-09-02T19:35:34Z
Severity
  • 2.4 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

nnn is vulnerable to Out-of-Bound write vulnerability. Due to lack of validation of attacker-controlled length fields deserialized from a session file, a crafted session file can cause nnn to write data beyond the bounds of fixed-size global buffers when loaded with the -s option. An attacker who can place a malicious session file in the victim's nnn session directory can exploit this to corrupt adjacent global state. Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.

References

Affected packages

Ubuntu:18.04:LTS / nnn

Package

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

Affected ranges

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

Affected versions

1.*
1.3-2
1.5-1
1.6-1
1.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "1.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json"

Ubuntu:20.04:LTS / nnn

Package

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

Affected ranges

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

Affected versions

2.*
2.6-1
2.7-1
2.8-1
2.8.1-1
2.9-1
3.*
3.0-1
3.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "3.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json"

Ubuntu:22.04:LTS / nnn

Package

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

Affected ranges

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

Affected versions

3.*
3.5-1
4.*
4.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "4.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json"

Ubuntu:24.04:LTS / nnn

Package

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

Affected ranges

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

Affected versions

4.*
4.8-1
4.9-1
4.9-1build1
4.9-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "4.9-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json"

Ubuntu:26.04:LTS / nnn

Package

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

Affected ranges

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

Affected versions

5.*
5.0-1
5.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nnn",
            "binary_version": "5.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65609.json"