Detections
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Fedora 42 : xen (2026-0c9aff64a5)

low Nessus Plugin ID 314598

Synopsis

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

Description

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-0c9aff64a5 advisory.

 oxenstored keeps quota related use counts across domain destruction [XSA-483, CVE-2026-23556] Xenstored DoS via XS_RESET_WATCHES command [XSA-484, CVE-2026-23557] grant table v2 race in status page mapping [XSA-486, CVE-2026-23558] x86: Floating Point Divider State Sampling [XSA-488, CVE-2025-54505]

Tenable has extracted the preceding description block directly from the Fedora 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 xen package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-0c9aff64a5

Plugin Details

Severity: Low

ID: 314598

File Name: fedora_2026-0c9aff64a5.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 5/14/2026

Updated: 5/14/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2026-23558

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

CVSS v4

Risk Factor: Low

Base Score: 2

Threat Score: 0.4

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2025-54505

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:xen, cpe:/o:fedoraproject:fedora:42

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/29/2026

Vulnerability Publication Date: 4/27/2026

Reference Information

CVE: CVE-2025-54505, CVE-2026-23556, CVE-2026-23557, CVE-2026-23558

FEDORA: 2026-0c9aff64a5

IAVB: 2026-B-0069