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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000542)

medium Nessus Plugin ID 283756

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-2026-000542 advisory.

 The ipc_rcu_putref function in ipc/util.c in the Linux kernel before 3.10 does not properly manage a reference count, which allows local users to cause a denial of service (memory consumption or system crash) via a crafted application.

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?d504877d

http://www.nessus.org/u?1e4c4981

http://lists.opensuse.org/opensuse-updates/2014-02/msg00045.html

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

http://rhn.redhat.com/errata/RHSA-2015-0284.html

http://www.openwall.com/lists/oss-security/2013/10/30/4

https://bugzilla.redhat.com/show_bug.cgi?id=1024854

http://www.nessus.org/u?4024ffb2

https://security-tracker.debian.org/tracker/CVE-2013-4483

https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.10.bz2

Plugin Details

Severity: Medium

ID: 283756

File Name: unity_linux_UTSA-2026-000542.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-2013-4483

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/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/14/2026

Vulnerability Publication Date: 10/30/2013

Reference Information

CVE: CVE-2013-4483