UBUNTU-CVE-2026-11837

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Source

https://ubuntu.com/security/CVE-2026-11837

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-11837

Upstream

CVE-2026-11837

Published

2026-06-10T05:16:00Z

Modified

2026-06-12T09:04:04.746736296Z

Severity

7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A local privilege escalation vulnerability was found in the ansible.posix authorizedkey module. The module's keyfile() function uses os.chown() instead of os.lchown() and opens files without ONOFOLLOW when managing SSH authorized keys. An unprivileged local user can pre-stage symbolic links in their ~/.ssh directory to redirect file ownership changes to arbitrary system paths when an operator runs the authorized_key task as root, leading to local privilege escalation.

References

Affected packages

Ubuntu:22.04:LTS

ansible-core

Package

Name: ansible-core
Purl: pkg:deb/ubuntu/ansible-core?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.12.0-1

2.12.0-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible-core",
            "binary_version": "2.12.0-1ubuntu0.1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:24.04:LTS

ansible

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.7.0+dfsg-1

7.7.0+dfsg-3

9.*

9.2.0+dfsg-0ubuntu4

9.2.0+dfsg-0ubuntu5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "9.2.0+dfsg-0ubuntu5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

ansible-core

Package

Name: ansible-core
Purl: pkg:deb/ubuntu/ansible-core?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.14.9-2

2.14.11-1

2.14.11-2

2.14.13-1

2.16.3-0ubuntu1

2.16.3-0ubuntu2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible-core",
            "binary_version": "2.16.3-0ubuntu2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:25.10

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

11.*

11.2.0+dfsg-1

12.*

12.0.0~a2+dfsg-1

12.0.0~a4+dfsg-1

12.0.0~a6+dfsg-1

12.0.0~b1+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "12.0.0~b1+dfsg-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

ansible-core

Package

Name: ansible-core
Purl: pkg:deb/ubuntu/ansible-core?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.18.1-4ubuntu1

2.19.0~beta4-1ubuntu1

2.19.0-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible-core",
            "binary_version": "2.19.0-1ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:26.04:LTS

ansible

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

12.*

12.0.0~b1+dfsg-1

12.0.0+dfsg-1

12.2.0+dfsg-1

13.*

13.1.0+dfsg-1

13.1.0+dfsg-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "13.1.0+dfsg-1ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

ansible-core

Package

Name: ansible-core
Purl: pkg:deb/ubuntu/ansible-core?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.19.0-1ubuntu1

2.19.4-1

2.20.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible-core",
            "binary_version": "2.20.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:Pro:14.04:LTS

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1+dfsg-1

1.3.4+dfsg-1

1.4.0+dfsg-1

1.4.1+dfsg-1

1.4.3+dfsg-1

1.4.4+dfsg-1

1.5.4+dfsg-1

1.5.4+dfsg-1ubuntu0.1~esm1

1.5.4+dfsg-1ubuntu0.1~esm2

1.5.4+dfsg-1ubuntu0.1~esm3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "ansible-fireball",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "ansible-node-fireball",
            "binary_version": "1.5.4+dfsg-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:Pro:16.04:LTS

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.9.2+dfsg-2

1.9.4-1

2.*

2.0.0.2-2

2.0.0.2-2ubuntu1

2.0.0.2-2ubuntu1.1

2.0.0.2-2ubuntu1.2

2.0.0.2-2ubuntu1.3

2.0.0.2-2ubuntu1.3+esm1

2.0.0.2-2ubuntu1.3+esm2

2.0.0.2-2ubuntu1.3+esm3

2.0.0.2-2ubuntu1.3+esm4

2.0.0.2-2ubuntu1.3+esm5

2.0.0.2-2ubuntu1.3+esm6

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "2.0.0.2-2ubuntu1.3+esm6"
        },
        {
            "binary_name": "ansible-fireball",
            "binary_version": "2.0.0.2-2ubuntu1.3+esm6"
        },
        {
            "binary_name": "ansible-node-fireball",
            "binary_version": "2.0.0.2-2ubuntu1.3+esm6"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:Pro:18.04:LTS

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.3.1.0+dfsg-2

2.5.0+dfsg-1

2.5.1+dfsg-1

2.5.1+dfsg-1ubuntu0.1

2.5.1+dfsg-1ubuntu0.1+esm1

2.5.1+dfsg-1ubuntu0.1+esm2

2.5.1+dfsg-1ubuntu0.1+esm3

2.5.1+dfsg-1ubuntu0.1+esm4

2.5.1+dfsg-1ubuntu0.1+esm5

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "2.5.1+dfsg-1ubuntu0.1+esm5"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:Pro:20.04:LTS

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.8.3+dfsg-1

2.8.6+dfsg-1

2.9.2+dfsg-1

2.9.4+dfsg-1

2.9.6+dfsg-1

2.9.6+dfsg-1ubuntu0.1~esm1

2.9.6+dfsg-1ubuntu0.1~esm2

2.9.6+dfsg-1ubuntu0.1~esm3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "2.9.6+dfsg-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"

Ubuntu:Pro:22.04:LTS

ansible

Package

Name: ansible
Purl: pkg:deb/ubuntu/ansible?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.10.7+merged+base+2.10.8+dfsg-1

2.10.7+merged+base+2.10.8+dfsg-1ubuntu0.1~esm1

2.10.7+merged+base+2.10.8+dfsg-1ubuntu0.1~esm4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ansible",
            "binary_version": "2.10.7+merged+base+2.10.8+dfsg-1ubuntu0.1~esm4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11837.json"