UBUNTU-CVE-2026-40706

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Source
https://ubuntu.com/security/CVE-2026-40706
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-40706
Upstream
Downstream
Related
Published
2026-04-21T12:00:00Z
Modified
2026-04-28T16:44:27.789396015Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In NTFS-3G 2022.10.3, a heap buffer overflow exists in ntfsbuildpermissionsposix() in acls.c that allows an attacker to corrupt heap memory in the SUID-root ntfs-3g binary by crafting a malicious NTFS image. The overflow is triggered on the READ path (stat, readdir, open) when processing a security descriptor with multiple ACCESSDENIED ACEs containing WRITE_OWNER from distinct group SIDs.

References

Affected packages

Ubuntu:18.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2017.3.23-2ubuntu0.18.04.5?arch=source&distro=bionic

Affected ranges

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

Affected versions

1:2016.*
1:2016.2.22AR.2-2
1:2017.*
1:2017.3.23-2
1:2017.3.23-2ubuntu0.18.04.1
1:2017.3.23-2ubuntu0.18.04.2
1:2017.3.23-2ubuntu0.18.04.3
1:2017.3.23-2ubuntu0.18.04.4
1:2017.3.23-2ubuntu0.18.04.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2017.3.23-2ubuntu0.18.04.5",
            "binary_name": "libntfs-3g88"
        },
        {
            "binary_version": "1:2017.3.23-2ubuntu0.18.04.5",
            "binary_name": "ntfs-3g"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:20.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2017.3.23AR.3-3ubuntu1.3?arch=source&distro=focal

Affected ranges

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

Affected versions

1:2017.*
1:2017.3.23AR.3-3ubuntu1
1:2017.3.23AR.3-3ubuntu1.1
1:2017.3.23AR.3-3ubuntu1.2
1:2017.3.23AR.3-3ubuntu1.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2017.3.23AR.3-3ubuntu1.3",
            "binary_name": "libntfs-3g883"
        },
        {
            "binary_version": "1:2017.3.23AR.3-3ubuntu1.3",
            "binary_name": "ntfs-3g"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:22.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2021.8.22-3ubuntu1.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2021.8.22-3ubuntu1.3

Affected versions

1:2017.*
1:2017.3.23AR.3-3ubuntu5
1:2017.3.23AR.3-3ubuntu6
1:2021.*
1:2021.8.22-3ubuntu1
1:2021.8.22-3ubuntu1.1
1:2021.8.22-3ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2021.8.22-3ubuntu1.3",
            "binary_name": "libntfs-3g89"
        },
        {
            "binary_version": "1:2021.8.22-3ubuntu1.3",
            "binary_name": "ntfs-3g"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:24.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2022.10.3-1.2ubuntu3.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2022.10.3-1.2ubuntu3.1

Affected versions

1:2022.*
1:2022.10.3-1ubuntu1
1:2022.10.3-1.2ubuntu1
1:2022.10.3-1.2ubuntu2
1:2022.10.3-1.2ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2022.10.3-1.2ubuntu3.1",
            "binary_name": "libntfs-3g89t64"
        },
        {
            "binary_version": "1:2022.10.3-1.2ubuntu3.1",
            "binary_name": "ntfs-3g"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:25.10
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2022.10.3-5ubuntu0.25.10.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2022.10.3-5ubuntu0.25.10.1

Affected versions

1:2022.*
1:2022.10.3-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2022.10.3-5ubuntu0.25.10.1",
            "binary_name": "libntfs-3g89t64"
        },
        {
            "binary_version": "1:2022.10.3-5ubuntu0.25.10.1",
            "binary_name": "ntfs-3g"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:26.04
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2022.10.3-5ubuntu1?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2022.10.3-5ubuntu1

Affected versions

1:2022.*
1:2022.10.3-5
1:2022.10.3-5build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2022.10.3-5ubuntu1",
            "binary_name": "libntfs-3g89t64"
        },
        {
            "binary_version": "1:2022.10.3-5ubuntu1",
            "binary_name": "ntfs-3g"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:Pro:14.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2013.1.13AR.1-2ubuntu2+esm4?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

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

Affected versions

1:2013.*
1:2013.1.13AR.1-2ubuntu1
1:2013.1.13AR.1-2ubuntu2
1:2013.1.13AR.1-2ubuntu2+esm1
1:2013.1.13AR.1-2ubuntu2+esm2
1:2013.1.13AR.1-2ubuntu2+esm3
1:2013.1.13AR.1-2ubuntu2+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2013.1.13AR.1-2ubuntu2+esm4",
            "binary_name": "ntfs-3g"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"
Ubuntu:Pro:16.04:LTS
ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2015.3.14AR.1-1ubuntu0.3+esm4?arch=source&distro=esm-infra/xenial

Affected ranges

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

Affected versions

1:2014.*
1:2014.2.15AR.3-3
1:2015.*
1:2015.3.14AR.1-1
1:2015.3.14AR.1-1build1
1:2015.3.14AR.1-1ubuntu0.1
1:2015.3.14AR.1-1ubuntu0.2
1:2015.3.14AR.1-1ubuntu0.3
1:2015.3.14AR.1-1ubuntu0.3+esm1
1:2015.3.14AR.1-1ubuntu0.3+esm2
1:2015.3.14AR.1-1ubuntu0.3+esm3
1:2015.3.14AR.1-1ubuntu0.3+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2015.3.14AR.1-1ubuntu0.3+esm4",
            "binary_name": "ntfs-3g"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40706.json"