Detections
Analytics
Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001924)
medium Nessus Plugin ID 286705
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-2026-001924 advisory.The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka Linux pciback missing sanity checks.
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?8e7ec833
http://www.nessus.org/u?30ff9fab
http://www.nessus.org/u?447aad90
http://www.nessus.org/u?cc67a458
http://www.nessus.org/u?43ad043b
http://www.nessus.org/u?f038b32a
http://www.nessus.org/u?781faab0
http://www.nessus.org/u?ff3f6632
http://www.debian.org/security/2016/dsa-3434
http://www.securityfocus.com/bid/79546
http://www.securitytracker.com/id/1034480
http://xenbits.xen.org/xsa/advisory-157.html
Plugin Details
Severity: Medium
ID: 286705
File Name: unity_linux_UTSA-2026-001924.nasl
Version: 1.1
Type: local
Published: 1/15/2026
Updated: 1/15/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.7
Temporal Score: 3.5
Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2015-8551
CVSS v3
Risk Factor: Medium
Base Score: 6
Temporal Score: 5.2
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/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: 12/17/2015
Reference Information
CVE: CVE-2015-8551