UBUNTU-CVE-2026-16742

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-16742
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16742.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-16742
Upstream
  • CVE-2026-16742
Downstream
Related
Published
2026-08-10T00:00:00Z
Modified
2026-08-13T03:00:47Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

systemd-homed contains a local privilege escalation bug via arbitrary system group addition to a local, logged in, homed-managed user

References

Affected packages

Ubuntu:22.04:LTS / systemd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
249.11-0ubuntu3.22

Affected versions

248.*
248.3-1ubuntu8
249.*
249.5-2ubuntu1
249.5-2ubuntu2
249.5-2ubuntu3
249.5-2ubuntu4
249.9-0ubuntu2
249.10-0ubuntu1
249.10-0ubuntu2
249.11-0ubuntu1
249.11-0ubuntu2
249.11-0ubuntu3
249.11-0ubuntu3.1
249.11-0ubuntu3.3
249.11-0ubuntu3.4
249.11-0ubuntu3.6
249.11-0ubuntu3.7
249.11-0ubuntu3.9
249.11-0ubuntu3.10
249.11-0ubuntu3.11
249.11-0ubuntu3.12
249.11-0ubuntu3.15
249.11-0ubuntu3.16
249.11-0ubuntu3.17
249.11-0ubuntu3.19
249.11-0ubuntu3.20
249.11-0ubuntu3.21

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libnss-systemd",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-oomd",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-repart",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-standalone-sysusers",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-standalone-tmpfiles",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-tests",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "systemd-timesyncd",
            "binary_version": "249.11-0ubuntu3.22"
        },
        {
            "binary_name": "udev",
            "binary_version": "249.11-0ubuntu3.22"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16742.json"

Ubuntu:24.04:LTS / systemd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
255.4-1ubuntu8.17

Affected versions

253.*
253.5-1ubuntu6
253.5-1ubuntu7
255.*
255.2-3ubuntu2
255.4-1ubuntu5
255.4-1ubuntu6
255.4-1ubuntu7
255.4-1ubuntu8
255.4-1ubuntu8.1
255.4-1ubuntu8.2
255.4-1ubuntu8.4
255.4-1ubuntu8.5
255.4-1ubuntu8.6
255.4-1ubuntu8.8
255.4-1ubuntu8.10
255.4-1ubuntu8.11
255.4-1ubuntu8.12
255.4-1ubuntu8.14
255.4-1ubuntu8.15
255.4-1ubuntu8.16

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libnss-systemd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libsystemd-shared",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-boot",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-boot-efi",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-homed",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-oomd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-resolved",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-standalone-sysusers",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-standalone-tmpfiles",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-tests",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-timesyncd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-ukify",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "systemd-userdbd",
            "binary_version": "255.4-1ubuntu8.17"
        },
        {
            "binary_name": "udev",
            "binary_version": "255.4-1ubuntu8.17"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16742.json"

Ubuntu:26.04:LTS / systemd

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
259.5-0ubuntu3.4

Affected versions

257.*
257.9-0ubuntu2
Other
259-1ubuntu2
259-1ubuntu3
259.*
259.3-0ubuntu1
259.5-0ubuntu1
259.5-0ubuntu2
259.5-0ubuntu3
259.5-0ubuntu3.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnss-myhostname",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libnss-mymachines",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libnss-resolve",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libnss-systemd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libpam-systemd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libsystemd-shared",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libsystemd0",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "libudev1",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-boot",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-boot-efi",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-boot-tools",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-container",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-coredump",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-cryptsetup",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-homed",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-journal-remote",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-oomd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-repart",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-resolved",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-standalone-shutdown",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-standalone-sysusers",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-standalone-tmpfiles",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-sysv",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-tests",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-timesyncd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-ukify",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "systemd-userdbd",
            "binary_version": "259.5-0ubuntu3.4"
        },
        {
            "binary_name": "udev",
            "binary_version": "259.5-0ubuntu3.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16742.json"