Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000621)

medium Nessus Plugin ID 283773

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-2026-000621 advisory.

Race condition in the environ_read function in fs/proc/base.c in the Linux kernel before 4.5.4 allows local users to obtain sensitive information from kernel memory by reading a /proc/*/environ file during a process-setup time interval in which environment-variable copying is incomplete.

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?4eb701ee

http://www.nessus.org/u?8d47a24a

http://source.android.com/security/bulletin/2016-11-01.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.4

http://www.securityfocus.com/bid/94138

http://www.ubuntu.com/usn/USN-3159-1

http://www.ubuntu.com/usn/USN-3159-2

https://bugzilla.kernel.org/show_bug.cgi?id=116461

https://forums.grsecurity.net/viewtopic.php?f=3&t=4363

http://www.nessus.org/u?faf7951e

https://security-tracker.debian.org/tracker/CVE-2016-7916

Plugin Details

Severity: Medium

ID: 283773

File Name: unity_linux_UTSA-2026-000621.nasl

Version: 1.3

Type: local

Published: 1/14/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2016-7916

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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: 1/14/2026

Vulnerability Publication Date: 11/7/2016

Reference Information

CVE: CVE-2016-7916