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Ubuntu Pro FIPS-updates 24.04 LTS : Linux kernel (Azure FIPS) vulnerabilities (USN-7940-1)

high Nessus Plugin ID 279273

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu Pro FIPS-updates 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7940-1 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:

 - ARM64 architecture;

 - PowerPC architecture;

 - x86 architecture;

 - Cryptographic API;

 - ACPI drivers;

 - Ublk userspace block driver;

 - Clock framework and drivers;

 - EDAC drivers;

 - GPU drivers;

 - HSI subsystem;

 - IIO subsystem;

 - InfiniBand drivers;

 - Media drivers;

 - MemoryStick subsystem;

 - Network drivers;

 - NTB driver;

 - PCI subsystem;

 - Remote Processor subsystem;

 - Thermal drivers;

 - Virtio Host (VHOST) subsystem;

 - 9P distributed file system;

 - File systems infrastructure;

 - JFS file system;

 - Network file system (NFS) server daemon;

 - NTFS3 file system;

 - SMB network file system;

 - Memory management;

 - Bluetooth subsystem;

 - RDMA verbs API;

 - Kernel fork() syscall;

 - Timer subsystem;

 - Tracing infrastructure;

 - Watch queue notification mechanism;

 - Appletalk network protocol;

 - Asynchronous Transfer Mode (ATM) subsystem;

 - Networking core;

 - IPv4 networking;

 - IPv6 networking;

 - Netfilter;

 - Network traffic control;

 - SCTP protocol;

 - TLS protocol;

 - SoC Audio for Freescale CPUs drivers; (CVE-2023-53034, CVE-2024-58092, CVE-2025-21729, CVE-2025-22018, CVE-2025-22019, CVE-2025-22020, CVE-2025-22021, CVE-2025-22025, CVE-2025-22027, CVE-2025-22028, CVE-2025-22033, CVE-2025-22035, CVE-2025-22036, CVE-2025-22038, CVE-2025-22039, CVE-2025-22040, CVE-2025-22041, CVE-2025-22042, CVE-2025-22044, CVE-2025-22045, CVE-2025-22047, CVE-2025-22050, CVE-2025-22053, CVE-2025-22054, CVE-2025-22055, CVE-2025-22056, CVE-2025-22057, CVE-2025-22058, CVE-2025-22060, CVE-2025-22062, CVE-2025-22063, CVE-2025-22064, CVE-2025-22065, CVE-2025-22066, CVE-2025-22068, CVE-2025-22070, CVE-2025-22071, CVE-2025-22072, CVE-2025-22073, CVE-2025-22075, CVE-2025-22079, CVE-2025-22080, CVE-2025-22081, CVE-2025-22083, CVE-2025-22086, CVE-2025-22089, CVE-2025-22090, CVE-2025-22095, CVE-2025-22097, CVE-2025-23136, CVE-2025-23138, CVE-2025-37838, CVE-2025-37937, CVE-2025-37958, CVE-2025-38118, CVE-2025-38152, CVE-2025-38227, CVE-2025-38240, CVE-2025-38352, CVE-2025-38575, CVE-2025-38616, CVE-2025-38637, CVE-2025-38666, CVE-2025-38678, CVE-2025-39682, CVE-2025-39728, CVE-2025-39735, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018, CVE-2025-40114, CVE-2025-40157)

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.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-7940-1

Plugin Details

Severity: High

ID: 279273

File Name: ubuntu_USN-7940-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/18/2025

Updated: 12/18/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2025-40114

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:pro:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.8.0-1044-azure-fips

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/17/2025

Vulnerability Publication Date: 2/27/2025

CISA Known Exploited Vulnerability Due Dates: 9/25/2025

Reference Information

CVE: CVE-2023-53034, CVE-2024-58092, CVE-2025-21729, CVE-2025-22018, CVE-2025-22019, CVE-2025-22020, CVE-2025-22021, CVE-2025-22025, CVE-2025-22027, CVE-2025-22028, CVE-2025-22033, CVE-2025-22035, CVE-2025-22036, CVE-2025-22038, CVE-2025-22039, CVE-2025-22040, CVE-2025-22041, CVE-2025-22042, CVE-2025-22044, CVE-2025-22045, CVE-2025-22047, CVE-2025-22050, CVE-2025-22053, CVE-2025-22054, CVE-2025-22055, CVE-2025-22056, CVE-2025-22057, CVE-2025-22058, CVE-2025-22060, CVE-2025-22062, CVE-2025-22063, CVE-2025-22064, CVE-2025-22065, CVE-2025-22066, CVE-2025-22068, CVE-2025-22070, CVE-2025-22071, CVE-2025-22072, CVE-2025-22073, CVE-2025-22075, CVE-2025-22079, CVE-2025-22080, CVE-2025-22081, CVE-2025-22083, CVE-2025-22086, CVE-2025-22089, CVE-2025-22090, CVE-2025-22095, CVE-2025-22097, CVE-2025-23136, CVE-2025-23138, CVE-2025-37838, CVE-2025-37937, CVE-2025-37958, CVE-2025-38118, CVE-2025-38152, CVE-2025-38227, CVE-2025-38240, CVE-2025-38352, CVE-2025-38575, CVE-2025-38616, CVE-2025-38637, CVE-2025-38666, CVE-2025-38678, CVE-2025-39682, CVE-2025-39728, CVE-2025-39735, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018, CVE-2025-40114, CVE-2025-40157, CVE-2025-40300

USN: 7940-1