Detections
Analytics

Linux Distros Unpatched Vulnerability : CVE-2025-29946

medium Nessus Plugin ID 300520

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

 - Insufficient or Incomplete Data Removal in Hardware Component in SEV firmware doesn't fully flush IOMMU.
 This can potentially lead to a loss of confidentiality and integrity in guest memory. (CVE-2025-29946)

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

Solution

There is no known solution at this time.

See Also

https://ubuntu.com/security/CVE-2025-29946

Plugin Details

Severity: Medium

ID: 300520

File Name: unpatched_CVE_2025_29946.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2026

Updated: 3/4/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 3.1

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

CVSS Score Source: CVE-2025-29946

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.4

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

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

CVSS v4

Risk Factor: Medium

Base Score: 4.5

Threat Score: 0.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:amd64-microcode, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:canonical:ubuntu_linux:24.04:-:lts

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/10/2026

Reference Information

CVE: CVE-2025-29946