Fedora 43 : xen (2026-a9ea805bc1)

high Nessus Plugin ID 362830

Synopsis

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

Description

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a9ea805bc1 advisory.

x86: DMs may cause mem leak by IRQ binding [XSA-509, CVE-2026-62437] x86: improper handling of HVM emulation return codes [XSA-510, CVE-2026-79602] Unconditionally do TLB flushing ahead of page scrubbing [XSA-511, CVE-2026-79603] oxenstored: Unbounded accumulation of watches [XSA-512, CVE-2026-79604]

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.

Plugin Details

Severity: High

ID: 362830

File Name: fedora_2026-a9ea805bc1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Fedora Local Security Checks

Published: 10/3/2026

Updated: 10/3/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-79602

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:43, p-cpe:/a:fedoraproject:fedora:xen

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/17/2026

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-62437, CVE-2026-79602, CVE-2026-79603, CVE-2026-79604

FEDORA: 2026-a9ea805bc1

IAVB: 2026-B-0250

Detections

Analytics