Unity Linux 20.1020e / 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-142542)

high Nessus Plugin ID 370864

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-2026-142542 advisory.

In the Linux kernel, the following vulnerability has been resolved:

rapidio/tsi721: prevent a bad dereference in tsi721_db_dpc()

With a list_for_each() loop, if we don't find the item we are looking for in the list, then the loop exits with the iterator, which is dbell in this loop, pointing to invalid memory.

This code uses the found variable to determine if we have found the doorbell we are looking for or not. However, the problem that the found variable needs to be set to false at the start of each iteration, otherwise after the first correct doorbell, then everything is marked as found.

Reset the found to false at the start of the iteration and move the variable inside the loop.

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: 370864

File Name: unity_linux_UTSA-2026-142542.nasl

Version: 1.1

Type: Local

Family: Unity Linux Local Security Checks

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.53

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-80645

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/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: 10/22/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-80645

Detections

Analytics