Detections
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Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : systemd vulnerabilities (USN-8626-1)

medium Nessus Plugin ID 365443

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8626-1 advisory.

 It was discovered that systemd-homed did not properly verify the signature of home records. A local attacker could possibly use this issue to add arbitrary system groups to a logged-in user and gain elevated privileges. (CVE-2026-16742)

 It was discovered that systemd-machined incorrectly handled certain polkit authorization checks. A local attacker could possibly use this issue to terminate arbitrary processes, including privileged ones. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-15060)

 It was discovered that systemd-oomd did not properly validate certain IPC requests. A local attacker could possibly use this issue to terminate arbitrary processes. (CVE-2026-15059)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8626-1

Plugin Details

Severity: Medium

ID: 365443

File Name: ubuntu_USN-8626-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/13/2026

Updated: 10/13/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.25

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-16742

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libnss-myhostname, p-cpe:/a:canonical:ubuntu_linux:libnss-mymachines, p-cpe:/a:canonical:ubuntu_linux:libnss-resolve, p-cpe:/a:canonical:ubuntu_linux:libnss-systemd, p-cpe:/a:canonical:ubuntu_linux:libpam-systemd, p-cpe:/a:canonical:ubuntu_linux:libsystemd-shared, p-cpe:/a:canonical:ubuntu_linux:libsystemd0, p-cpe:/a:canonical:ubuntu_linux:libudev1, p-cpe:/a:canonical:ubuntu_linux:systemd-boot-efi, p-cpe:/a:canonical:ubuntu_linux:systemd-boot-tools, p-cpe:/a:canonical:ubuntu_linux:systemd-boot, p-cpe:/a:canonical:ubuntu_linux:systemd-container, p-cpe:/a:canonical:ubuntu_linux:systemd-coredump, p-cpe:/a:canonical:ubuntu_linux:systemd-cryptsetup, p-cpe:/a:canonical:ubuntu_linux:systemd-homed, p-cpe:/a:canonical:ubuntu_linux:systemd-journal-remote, p-cpe:/a:canonical:ubuntu_linux:systemd-oomd, p-cpe:/a:canonical:ubuntu_linux:systemd-repart, p-cpe:/a:canonical:ubuntu_linux:systemd-resolved, p-cpe:/a:canonical:ubuntu_linux:systemd-standalone-shutdown, p-cpe:/a:canonical:ubuntu_linux:systemd-standalone-sysusers, p-cpe:/a:canonical:ubuntu_linux:systemd-standalone-tmpfiles, p-cpe:/a:canonical:ubuntu_linux:systemd-sysv, p-cpe:/a:canonical:ubuntu_linux:systemd-tests, p-cpe:/a:canonical:ubuntu_linux:systemd-timesyncd, p-cpe:/a:canonical:ubuntu_linux:systemd-ukify, p-cpe:/a:canonical:ubuntu_linux:systemd-userdbd, p-cpe:/a:canonical:ubuntu_linux:systemd, p-cpe:/a:canonical:ubuntu_linux:udev

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 8/10/2026

Vulnerability Publication Date: 8/10/2026

Reference Information

CVE: CVE-2026-15059, CVE-2026-15060, CVE-2026-16742

USN: 8626-1