UBUNTU-CVE-2026-21444

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Source
https://ubuntu.com/security/CVE-2026-21444
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21444.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-21444
Upstream
Withdrawn
2026-01-06T05:28:10Z
Published
2026-01-05T00:00:00Z
Modified
2026-01-06T08:49:09.812095Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.

References

Affected packages

Ubuntu:22.04:LTS / libtpms

Package

Name
libtpms
Purl
pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu1.22.04.2?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*
0.8.2-1ubuntu1
0.9.0-0ubuntu1
0.9.0-0ubuntu2
0.9.0-0ubuntu3
0.9.0-0ubuntu4
0.9.3-0ubuntu1
0.9.3-0ubuntu1.22.04.1
0.9.3-0ubuntu1.22.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.3-0ubuntu1.22.04.2",
            "binary_name": "libtpms-dev"
        },
        {
            "binary_version": "0.9.3-0ubuntu1.22.04.2",
            "binary_name": "libtpms0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21444.json"

Ubuntu:24.04:LTS / libtpms

Package

Name
libtpms
Purl
pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu4.24.04.1?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*
0.9.3-0ubuntu2
0.9.3-0ubuntu3
0.9.3-0ubuntu4
0.9.3-0ubuntu4.24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.3-0ubuntu4.24.04.1",
            "binary_name": "libtpms-dev"
        },
        {
            "binary_version": "0.9.3-0ubuntu4.24.04.1",
            "binary_name": "libtpms0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21444.json"

Ubuntu:25.10 / libtpms

Package

Name
libtpms
Purl
pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu5?arch=source&distro=questing

Affected ranges

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

Affected versions

0.*
0.9.3-0ubuntu4
0.9.3-0ubuntu5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.3-0ubuntu5",
            "binary_name": "libtpms-dev"
        },
        {
            "binary_version": "0.9.3-0ubuntu5",
            "binary_name": "libtpms0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21444.json"

Ubuntu:25.04 / libtpms

Package

Name
libtpms
Purl
pkg:deb/ubuntu/libtpms@0.9.3-0ubuntu4.25.04.1?arch=source&distro=plucky

Affected ranges

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

Affected versions

0.*
0.9.3-0ubuntu4
0.9.3-0ubuntu4.25.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.3-0ubuntu4.25.04.1",
            "binary_name": "libtpms-dev"
        },
        {
            "binary_version": "0.9.3-0ubuntu4.25.04.1",
            "binary_name": "libtpms0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21444.json"