Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002081)

medium Nessus Plugin ID 286501

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-2026-002081 advisory.

The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue.

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?d00987be

http://www.nessus.org/u?97112d4b

http://www.nessus.org/u?0be4d475

http://www.nessus.org/u?b06005b6

http://www.nessus.org/u?cf56de53

http://www.nessus.org/u?c86fff27

http://www.nessus.org/u?3495dcda

http://www.nessus.org/u?00b21156

http://www.nessus.org/u?5a4f1d7d

http://www.nessus.org/u?d6b74c03

http://www.nessus.org/u?ced6824b

http://openwall.com/lists/oss-security/2013/11/28/1

http://rhn.redhat.com/errata/RHSA-2014-0285.html

http://secunia.com/advisories/55840

http://security.gentoo.org/glsa/glsa-201407-03.xml

http://support.amd.com/TechDocs/51810_16h_00h-0Fh_Rev_Guide.pdf

http://www.debian.org/security/2015/dsa-3128

http://www.openwall.com/lists/oss-security/2013/12/02/1

http://www.securityfocus.com/bid/63983

http://www.securitytracker.com/id/1029415

http://www.zdnet.com/blog/hardware/amd-owns-up-to-cpu-bug/18924

https://bugzilla.redhat.com/show_bug.cgi?id=1035823

https://exchange.xforce.ibmcloud.com/vulnerabilities/89335

https://security-tracker.debian.org/tracker/CVE-2013-6885

Plugin Details

Severity: Medium

ID: 286501

File Name: unity_linux_UTSA-2026-002081.nasl

Version: 1.1

Type: local

Published: 1/15/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2013-6885

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

Temporal Vector: CVSS:3.0/E:U/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 Ease: No known exploits are available

Patch Publication Date: 1/15/2026

Vulnerability Publication Date: 11/27/2013

Reference Information

CVE: CVE-2013-6885