Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000238)

high Nessus Plugin ID 282163

Synopsis

The Unity Linux host is missing one or more security updates.

Description

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000238 advisory.

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after- free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

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

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

Solution

Update the affected kernel package.

Plugin Details

Severity: High

ID: 282163

File Name: unity_linux_UTSA-2026-000238.nasl

Version: 1.1

Type: local

Family: Unity Linux Local Security Checks

Published: 1/7/2026

Updated: 1/7/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5

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

CVSS Score Source: CVE-2018-16884

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 1/7/2026

Vulnerability Publication Date: 12/18/2018

Reference Information

CVE: CVE-2018-16884

Detections

Analytics