UBUNTU-CVE-2026-65610

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Source
https://ubuntu.com/security/CVE-2026-65610
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-65610.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-65610
Upstream
Published
2026-08-19T14:17:00Z
Modified
2026-09-02T19:35:33Z
Severity
  • 2.4 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer. 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-2026-65610.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-2026-65610.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-2026-65610.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-2026-65610.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-2026-65610.json"