UBUNTU-CVE-2026-111145

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Source
https://ubuntu.com/security/CVE-2026-111145
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-111145
Upstream
Published
2026-10-16T00:00:00Z
Modified
2026-10-17T12:58:03Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

ytnef through 2.1.2 contains a heap out-of-bounds read vulnerability in DecompressRTF() in lib/ytnef.c that never validates uncompressedSize for uncompressed RTF streams. Attackers can supply a crafted winmail.dat TNEF attachment with a malicious PT_BINARY MAPI property to crash ytnefprint or libytnef callers and leak adjacent heap memory.

References

Affected packages

Ubuntu:16.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

1.*
1.5-6
1.5-9
1.5-9ubuntu0.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "1.5-9ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:18.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

1.*
1.9.2-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "1.9.2-2"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "1.9.2-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:20.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

1.*
1.9.3-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "1.9.3-1"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "1.9.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:22.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

1.*
1.9.3-3
2.*
2.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "2.0-1"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "2.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:24.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

2.*
2.0-1
2.1.2-1
2.1.2-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "2.1.2-1build1"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "2.1.2-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:26.04:LTS
libytnef

Package

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

Affected ranges

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

Affected versions

2.*
2.1.2-1build1
2.1.2-1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "2.1.2-1build2"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "2.1.2-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"
Ubuntu:26.10
libytnef

Package

Name
libytnef
Purl
pkg:deb/ubuntu/libytnef?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.1.2-1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libytnef0",
            "binary_version":  "2.1.2-1build2"
        },
        {
            "binary_name":  "ytnef-tools",
            "binary_version":  "2.1.2-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111145.json"