UBUNTU-CVE-2026-16445

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Source
https://ubuntu.com/security/CVE-2026-16445
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-16445
Upstream
Published
2026-07-21T13:17:00Z
Modified
2026-09-15T03:15:04Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut's NetworkManager-based initrd network module. These options are improperly handled and written into a temporary shell script without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs during system boot.

References

Affected packages

Ubuntu:16.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
043-2
043-4
044+3-1
044+3-2
044+3-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "044+3-3"
        },
        {
            "binary_name": "dracut-config-generic",
            "binary_version": "044+3-3"
        },
        {
            "binary_name": "dracut-config-rescue",
            "binary_version": "044+3-3"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "044+3-3"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "044+3-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"
Ubuntu:18.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
045+132-1
047-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "047-2"
        },
        {
            "binary_name": "dracut-config-generic",
            "binary_version": "047-2"
        },
        {
            "binary_name": "dracut-config-rescue",
            "binary_version": "047-2"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "047-2"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "047-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"
Ubuntu:20.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
048+80-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "048+80-2"
        },
        {
            "binary_name": "dracut-config-generic",
            "binary_version": "048+80-2"
        },
        {
            "binary_name": "dracut-config-rescue",
            "binary_version": "048+80-2"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "048+80-2"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "048+80-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"
Ubuntu:22.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
051-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-config-generic",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-config-rescue",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-live",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "051-1"
        },
        {
            "binary_name": "dracut-squash",
            "binary_version": "051-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"
Ubuntu:24.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
059-4ubuntu2
060+5-1ubuntu1
060+5-1ubuntu2
060+5-1ubuntu3
060+5-1ubuntu3.*
060+5-1ubuntu3.1
060+5-1ubuntu3.2
060+5-1ubuntu3.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-config-generic",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-config-rescue",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-install",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-live",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "060+5-1ubuntu3.3"
        },
        {
            "binary_name": "dracut-squash",
            "binary_version": "060+5-1ubuntu3.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"
Ubuntu:26.04:LTS
dracut

Package

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

Affected ranges

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

Affected versions

Other
108-3ubuntu3
108-8ubuntu1
109-5ubuntu1
109-7ubuntu1
109-9ubuntu1
109-11ubuntu1
110-1ubuntu2
110-3ubuntu1
110-5
110-7
110-10
110-11
110-11ubuntu0.*
110-11ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "dracut",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-core",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-install",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-network",
            "binary_version": "110-11ubuntu0.1"
        },
        {
            "binary_name": "dracut-test",
            "binary_version": "110-11ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16445.json"