The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - ipvs: Defer ip_vs_ftp unregister during netns cleanup On the netns cleanup path, __ip_vs_ftp_exit() may     unregister ip_vs_ftp before connections with valid cp->app pointers are flushed, leading to a use-after-     free. Fix this by introducing a global `exiting_module` flag, set to true in ip_vs_ftp_exit() before     unregistering the pernet subsystem. In __ip_vs_ftp_exit(), skip ip_vs_ftp unregister if called during     netns cleanup (when exiting_module is false) and defer it to __ip_vs_cleanup_batch(), which unregisters     all apps after all connections are flushed. If called during module exit, unregister ip_vs_ftp     immediately. (CVE-2025-40018)

Note that Nessus relies on the presence of the package as reported by the vendor.

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.

The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7935-1 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;

    - HSI subsystem;

    - Media drivers;

    - Network drivers;

    - Bluetooth subsystem;

    - Timer subsystem;

    - Memory management;

    - Appletalk network protocol;

    - Netfilter;

    - TLS protocol; (CVE-2025-21729, CVE-2025-37838, CVE-2025-37958, CVE-2025-38118, CVE-2025-38227,     CVE-2025-38352, CVE-2025-38616, CVE-2025-38666, CVE-2025-38678, CVE-2025-39964, CVE-2025-39993,     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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
271715	Linux Distros Unpatched Vulnerability : CVE-2025-40018	Nessus	Misc.	2025/10/27	2026/7/31	high
278745	Ubuntu 18.04 LTS : Linux kernel (Azure FIPS) vulnerabilities (USN-7937-1)	Nessus	Ubuntu Local Security Checks	2025/12/16	2026/6/11	high
278748	Ubuntu 22.04 LTS / 24.04 LTS : Linux kernel (Azure) vulnerabilities (USN-7935-1)	Nessus	Ubuntu Local Security Checks	2025/12/16	2026/2/24	high

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