UBUNTU-CVE-2026-103679

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Source
https://ubuntu.com/security/CVE-2026-103679
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-103679
Upstream
Published
2026-10-02T00:00:00Z
Modified
2026-10-02T22:30:16Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During extraction, improper memory management triggers a use-after-free and double-free condition, causing the application to crash and resulting in a Denial of Service (DoS).

References

Affected packages

Ubuntu:16.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.9-1
1.4.9-1+deb8u2build0.16.04.1
1.4.9-1+deb8u3build0.16.04.1
1.4.9-1+deb8u4build0.16.04.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.9-1+deb8u4build0.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"
Ubuntu:18.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.12-1.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.12-1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"
Ubuntu:20.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.12-1.2
1.4.18-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.18-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"
Ubuntu:22.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.18-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"
Ubuntu:24.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.18-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"
Ubuntu:26.04:LTS
tnef

Package

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

Affected ranges

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

Affected versions

1.*
1.4.18-5
1.4.18-5build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "tnef",
            "binary_version":  "1.4.18-5build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103679.json"