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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000617)

medium Nessus Plugin ID 283829

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-2026-000617 advisory.

 The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.

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?87dc636b

http://www.nessus.org/u?e626cc15

http://www.nessus.org/u?1291cb50

http://rhn.redhat.com/errata/RHSA-2016-1847.html

http://rhn.redhat.com/errata/RHSA-2016-1875.html

http://rhn.redhat.com/errata/RHSA-2016-2574.html

http://rhn.redhat.com/errata/RHSA-2016-2584.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5

http://www.openwall.com/lists/oss-security/2016/07/11/8

http://www.nessus.org/u?4763b451

http://www.nessus.org/u?d4be46a2

http://www.securityfocus.com/bid/91709

http://www.securitytracker.com/id/1036273

https://bugzilla.redhat.com/show_bug.cgi?id=1355654

http://www.nessus.org/u?48ca6de2

http://www.nessus.org/u?9d13aaf4

https://security-tracker.debian.org/tracker/CVE-2016-6198

Plugin Details

Severity: Medium

ID: 283829

File Name: unity_linux_UTSA-2026-000617.nasl

Version: 1.3

Type: local

Published: 1/14/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.8

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

CVSS Score Source: CVE-2016-6198

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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:P/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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/14/2026

Vulnerability Publication Date: 7/11/2016

Reference Information

CVE: CVE-2016-6198