Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002942)

high Nessus Plugin ID 287662

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-2026-002942 advisory.

Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by removing a network namespace, related to the ppp_register_net_channel and ppp_unregister_channel functions.

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?fd2ed077

http://www.nessus.org/u?b71ccf64

http://www.nessus.org/u?9e754eed

http://www.nessus.org/u?5673d37e

http://www.nessus.org/u?8e0da47e

http://www.nessus.org/u?f038b32a

http://www.nessus.org/u?dd0aec87

http://www.nessus.org/u?781faab0

http://www.nessus.org/u?ff3f6632

http://www.debian.org/security/2016/dsa-3607

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2

http://www.openwall.com/lists/oss-security/2016/05/15/2

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

http://www.nessus.org/u?cb8b72e0

http://www.securityfocus.com/bid/90605

http://www.securitytracker.com/id/1036763

http://www.ubuntu.com/usn/USN-3021-1

http://www.ubuntu.com/usn/USN-3021-2

https://bugzilla.redhat.com/show_bug.cgi?id=1335803

http://www.nessus.org/u?386a66de

https://security-tracker.debian.org/tracker/CVE-2016-4805

Plugin Details

Severity: High

ID: 287662

File Name: unity_linux_UTSA-2026-002942.nasl

Version: 1.2

Type: local

Published: 1/15/2026

Updated: 1/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2016-4805

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 5/11/2016

Reference Information

CVE: CVE-2016-4805