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Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002503)

medium Nessus Plugin ID 284853

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-2026-002503 advisory.

 The fib6_add function in net/ipv6/ip6_fib.c in the Linux kernel before 3.11.5 does not properly implement error-code encoding, which allows local users to cause a denial of service (NULL pointer dereference and system crash) by leveraging the CAP_NET_ADMIN capability for an IPv6 SIOCADDRT ioctl call.

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?c077a336

http://www.nessus.org/u?3cc53327

http://www.nessus.org/u?c7675788

http://rhn.redhat.com/errata/RHSA-2014-0100.html

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.11.5

http://www.openwall.com/lists/oss-security/2013/12/06/5

https://bugzilla.redhat.com/show_bug.cgi?id=1039054

http://www.nessus.org/u?9ff8ff77

https://security-tracker.debian.org/tracker/CVE-2013-6431

Plugin Details

Severity: Medium

ID: 284853

File Name: unity_linux_UTSA-2026-002503.nasl

Version: 1.1

Type: local

Published: 1/15/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.7

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

CVSS Score Source: CVE-2013-6431

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: 1/15/2026

Vulnerability Publication Date: 12/6/2013

Reference Information

CVE: CVE-2013-6431