Detections
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Fedora 44 : xen (2026-839be67202)

critical Nessus Plugin ID 369374

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Synopsis

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

Description

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-839be67202 advisory.

 x86/AMD: ineffectual Zenbleed workaround [XSA-515, CVE-2026-79608] x86: XPTI may break on huge-memory systems [XSA-516, CVE-2026-79609] grant-table: double version change race [XSA-517, CVE-2026-79610] VMX: VMentry failure with branch tracing and blocked states [XSA-518, CVE-2026-79611] Arm: multiple issues with GNTTABOP_cache_flush [XSA-519, CVE-2026-102699, CVE-2026-102702] gnttab: cache-flush handling may cause page reference leak [XSA-520, CVE-2026-102700]

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-2026-839be67202

Plugin Details

Severity: Critical

ID: 369374

File Name: fedora_2026-839be67202.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/21/2026

Updated: 10/21/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7

Percentile: 98

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-79608

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:44, 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: 10/19/2026

Vulnerability Publication Date: 9/10/2026

Reference Information

CVE: CVE-2026-102699, CVE-2026-102700, CVE-2026-102702, CVE-2026-79608, CVE-2026-79609, CVE-2026-79610, CVE-2026-79611

FEDORA: 2026-839be67202

IAVB: 2026-B-0250