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Ubuntu 25.04 : AMD Microcode vulnerabilities (USN-7848-1)

medium Nessus Plugin ID 272035

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Synopsis

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

Description

The remote Ubuntu 25.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7848-1 advisory.

 Oleksii Oleksenko, Cedric Fournet, Jana Hofmann, Boris Kpf, Stavros Volos, and Flavien Solt discovered that some AMD processors may allow an attacker to infer data from previous stores. A local attacker could possibly use this issue to expose sensitive information. This update provides the updated microcode mitigations required for the corresponding Linux kernel update.

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 amd64-microcode package.

See Also

https://ubuntu.com/security/notices/USN-7848-1

Plugin Details

Severity: Medium

ID: 272035

File Name: ubuntu_USN-7848-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 10/30/2025

Updated: 10/30/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2024-36357

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:25.04, p-cpe:/a:canonical:ubuntu_linux:amd64-microcode

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/29/2025

Vulnerability Publication Date: 7/8/2025

Reference Information

CVE: CVE-2024-36350, CVE-2024-36357

USN: 7848-1