Detections
Analytics
Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-004028)
medium Nessus Plugin ID 288286
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-2026-004028 advisory.An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.
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
https://usn.ubuntu.com/4439-1/
https://usn.ubuntu.com/4440-1/
http://www.nessus.org/u?5287a72c
http://www.nessus.org/u?5736c86e
http://www.openwall.com/lists/oss-security/2020/07/20/6
http://www.openwall.com/lists/oss-security/2020/07/29/3
http://www.openwall.com/lists/oss-security/2020/07/30/2
http://www.openwall.com/lists/oss-security/2020/07/30/3
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4
http://www.nessus.org/u?68154275
http://www.nessus.org/u?e0cf2ea1
http://www.nessus.org/u?7d10597e
https://security-tracker.debian.org/tracker/CVE-2019-20908
Plugin Details
Severity: Medium
ID: 288286
File Name: unity_linux_UTSA-2026-004028.nasl
Version: 1.2
Type: local
Published: 1/16/2026
Updated: 1/17/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Medium
Base Score: 6.9
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2019-20908
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 5.8
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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: 1/16/2026
Vulnerability Publication Date: 7/15/2020
Reference Information
CVE: CVE-2019-20908