Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002850)

high Nessus Plugin ID 287631

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-2026-002850 advisory.

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact may occur by renaming a file in a crafted ext4 filesystem image.

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?6e8d45d2

http://patchwork.ozlabs.org/patch/928666/

http://patchwork.ozlabs.org/patch/928667/

http://www.securityfocus.com/bid/104902

https://access.redhat.com/errata/RHSA-2018:2948

https://access.redhat.com/errata/RHSA-2018:3083

https://access.redhat.com/errata/RHSA-2018:3096

https://bugzilla.kernel.org/show_bug.cgi?id=200001

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10879

http://www.nessus.org/u?2ace96b8

http://www.nessus.org/u?41b77e3e

https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html

https://security-tracker.debian.org/tracker/CVE-2018-10879

https://usn.ubuntu.com/3753-1/

https://usn.ubuntu.com/3753-2/

https://usn.ubuntu.com/3871-1/

https://usn.ubuntu.com/3871-3/

https://usn.ubuntu.com/3871-4/

https://usn.ubuntu.com/3871-5/

Plugin Details

Severity: High

ID: 287631

File Name: unity_linux_UTSA-2026-002850.nasl

Version: 1.2

Type: local

Published: 1/15/2026

Updated: 1/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.8

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

CVSS Score Source: CVE-2018-10879

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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: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: 1/15/2026

Vulnerability Publication Date: 7/26/2018

Reference Information

CVE: CVE-2018-10879