The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7937-1 advisory.

    Jean-Claude Graf, Sandro Regge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel     contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain     processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this to expose     sensitive information from the host OS. (CVE-2025-40300)

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - Cryptographic API;

    - ACPI drivers;

    - DMA engine subsystem;

    - GPU drivers;

    - HSI subsystem;

    - Hardware monitoring drivers;

    - InfiniBand drivers;

    - Mailbox framework;

    - Network drivers;

    - Ethernet team driver;

    - AFS file system;

    - Ceph distributed file system;

    - Ext4 file system;

    - Network file system (NFS) server daemon;

    - NILFS2 file system;

    - File systems infrastructure;

    - KVM subsystem;

    - L3 Master device support module;

    - Timer subsystem;

    - Tracing infrastructure;

    - Memory management;

    - Appletalk network protocol;

    - DCCP (Datagram Congestion Control Protocol);

    - IPv6 networking;

    - Netfilter;

    - NET/ROM layer;

    - Open vSwitch;

    - SCTP protocol;

    - USB sound devices; (CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2023-52574, CVE-2023-52650,     CVE-2024-41006, CVE-2024-49935, CVE-2024-49963, CVE-2024-50006, CVE-2024-50067, CVE-2024-50095,     CVE-2024-50179, CVE-2024-50299, CVE-2024-53090, CVE-2024-53112, CVE-2024-53124, CVE-2024-53150,     CVE-2024-53217, CVE-2024-56767, CVE-2024-58083, CVE-2025-21715, CVE-2025-21722, CVE-2025-21761,     CVE-2025-21791, CVE-2025-21811, CVE-2025-21855, CVE-2025-37838, CVE-2025-37958, CVE-2025-38352,     CVE-2025-38666, CVE-2025-39964, CVE-2025-40018)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 18.04 LTS : Linux kernel (Azure FIPS) vulnerabilities (USN-7937-1)

high Nessus Plugin ID 278745

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Jun 12, 2026, 7:27 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606120727
Version 1.2 Feb 24, 2026, 12:45 PM CVSSv2 score source (changed from "CVE-2025-21855" to "CVE-2025-38666") Plugin Feed: 202602241245
Version 1.1 Dec 17, 2025, 4:56 PM New Plugin Feed: 202512171656