Unity Linux 20.1060a Security Update: kernel (UTSA-2026-002892)

medium Nessus Plugin ID 284852

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-2026-002892 advisory.

The make_response function in drivers/block/xen-blkback/blkback.c in the Linux kernel before 4.11.8 allows guest OS users to obtain sensitive information from host OS (or other guest OS) kernel memory by leveraging the copying of uninitialized padding fields in Xen block-interface response structures, aka XSA-216.

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?6460335c

http://www.nessus.org/u?06417707

http://www.debian.org/security/2017/dsa-3920

http://www.debian.org/security/2017/dsa-3927

http://www.debian.org/security/2017/dsa-3945

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.8

http://www.securityfocus.com/bid/99162

http://www.securitytracker.com/id/1038720

http://www.nessus.org/u?0a10d93c

https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

https://security-tracker.debian.org/tracker/CVE-2017-10911

https://security.gentoo.org/glsa/201708-03

https://xenbits.xen.org/xsa/advisory-216.html

Plugin Details

Severity: Medium

ID: 284852

File Name: unity_linux_UTSA-2026-002892.nasl

Version: 1.1

Type: local

Published: 1/15/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2017-10911

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 1/15/2026

Vulnerability Publication Date: 6/20/2017

Reference Information

CVE: CVE-2017-10911