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Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003573)

high Nessus Plugin ID 288184

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-2026-003573 advisory.

 In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

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?07b92d65

http://www.nessus.org/u?54eb4dbd

http://www.nessus.org/u?d997c0a6

http://www.nessus.org/u?40191551

http://www.nessus.org/u?944ce4c3

http://www.nessus.org/u?6ed3ae03

http://www.nessus.org/u?f2dc0e6b

https://access.redhat.com/errata/RHSA-2019:2405

https://access.redhat.com/errata/RHSA-2019:2411

https://access.redhat.com/errata/RHSA-2019:2809

https://bugs.chromium.org/p/project-zero/issues/detail?id=1903

https://bugzilla.redhat.com/show_bug.cgi?id=1730895

https://bugzilla.suse.com/show_bug.cgi?id=1140671

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17

http://www.nessus.org/u?c3554507

http://www.nessus.org/u?7ab96d4a

https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html

https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html

http://www.nessus.org/u?d1c15bb5

https://seclists.org/bugtraq/2019/Jul/30

https://seclists.org/bugtraq/2019/Jul/33

https://security-tracker.debian.org/tracker/CVE-2019-13272

https://security.netapp.com/advisory/ntap-20190806-0001/

https://support.f5.com/csp/article/K91025336

http://www.nessus.org/u?545c4fd7

https://usn.ubuntu.com/4093-1/

https://usn.ubuntu.com/4094-1/

https://usn.ubuntu.com/4095-1/

https://usn.ubuntu.com/4117-1/

https://usn.ubuntu.com/4118-1/

http://www.nessus.org/u?70e2ab30

https://www.debian.org/security/2019/dsa-4484

Plugin Details

Severity: High

ID: 288184

File Name: unity_linux_UTSA-2026-003573.nasl

Version: 1.1

Type: local

Published: 1/16/2026

Updated: 1/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2019-13272

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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:H/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: 1/16/2026

Vulnerability Publication Date: 7/16/2019

CISA Known Exploited Vulnerability Due Dates: 6/10/2022

Reference Information

CVE: CVE-2019-13272