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Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003986)

medium Nessus Plugin ID 288675

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-2026-003986 advisory.

 A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

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.

See Also

http://www.nessus.org/u?7f03e529

https://nvd.nist.gov/vuln/detail/CVE-2020-25656

Plugin Details

Severity: Medium

ID: 288675

File Name: unity_linux_UTSA-2026-003986.nasl

Version: 1.2

Type: local

Published: 1/16/2026

Updated: 1/17/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.5

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

CVSS Score Source: CVE-2020-25656

CVSS v3

Risk Factor: Medium

Base Score: 4.1

Temporal Score: 3.7

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

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

Vulnerability Information

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/16/2026

Vulnerability Publication Date: 11/11/2020

Reference Information

CVE: CVE-2020-25656