Detections
Analytics

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Nova vulnerability (USN-8434-1)

high Nessus Plugin ID 321372

Language:

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8434-1 advisory.

 It was discovered that Nova did not strip internal _nova-prefixed scheduler hints supplied by users on instance creation. An attacker could possibly use this issue to bypass Placement resource claims and scheduling constraint enforcement.

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

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8434-1

Plugin Details

Severity: High

ID: 321372

File Name: ubuntu_USN-8434-1.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 6/17/2026

Updated: 7/3/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.76

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-46448

CVSS v3

Risk Factor: High

Base Score: 8.5

Temporal Score: 7.6

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:nova-common, p-cpe:/a:canonical:ubuntu_linux:nova-compute-lxc, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:nova-novncproxy, p-cpe:/a:canonical:ubuntu_linux:nova-compute-qemu, p-cpe:/a:canonical:ubuntu_linux:nova-compute-xen, p-cpe:/a:canonical:ubuntu_linux:nova-api-os-volume, p-cpe:/a:canonical:ubuntu_linux:nova-compute-libvirt, p-cpe:/a:canonical:ubuntu_linux:python3-nova, p-cpe:/a:canonical:ubuntu_linux:nova-api, p-cpe:/a:canonical:ubuntu_linux:nova-ajax-console-proxy, p-cpe:/a:canonical:ubuntu_linux:nova-cells, p-cpe:/a:canonical:ubuntu_linux:nova-compute, p-cpe:/a:canonical:ubuntu_linux:nova-api-metadata, p-cpe:/a:canonical:ubuntu_linux:nova-scheduler, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:nova-compute-vmware, p-cpe:/a:canonical:ubuntu_linux:nova-compute-ironic, p-cpe:/a:canonical:ubuntu_linux:nova-serialproxy, p-cpe:/a:canonical:ubuntu_linux:nova-volume, p-cpe:/a:canonical:ubuntu_linux:nova-api-os-compute, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:nova-conductor, p-cpe:/a:canonical:ubuntu_linux:nova-compute-kvm, p-cpe:/a:canonical:ubuntu_linux:nova-spiceproxy

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-46448

USN: 8434-1