Debian dsa-6571 : libxen-dev - security update

high Nessus Plugin ID 366977

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6571 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6571-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff October 18, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : xen CVE ID : CVE-2026-62437 CVE-2026-79602 CVE-2026-79603 CVE-2026-79604 CVE-2026-79608 CVE-2026-79609 CVE-2026-79610 CVE-2026-79611 CVE-2026-102699 CVE-2026-102700 CVE-2026-102702

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, information disclosure or denial of service.

For the stable distribution (trixie), these problems have been fixed in version 4.20.4+39-gf1e1321c87-0+deb13u1.

We recommend that you upgrade your xen packages.

For the detailed security status of xen please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/xen

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the libxen-dev packages.

Plugin Details

Severity: High

ID: 366977

File Name: debian_DSA-6571.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/18/2026

Updated: 10/18/2026

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: 7.7

Percentile: 98.9

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-2026-79610

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

CVSS Score Source: CVE-2026-79602

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:libxen-dev, p-cpe:/a:debian:debian_linux:libxencall1, p-cpe:/a:debian:debian_linux:libxendevicemodel1, p-cpe:/a:debian:debian_linux:libxenevtchn1, p-cpe:/a:debian:debian_linux:libxenforeignmemory1, p-cpe:/a:debian:debian_linux:libxengnttab1, p-cpe:/a:debian:debian_linux:libxenhypfs1, p-cpe:/a:debian:debian_linux:libxenmisc4.20, p-cpe:/a:debian:debian_linux:libxenstore4, p-cpe:/a:debian:debian_linux:libxentoolcore1, p-cpe:/a:debian:debian_linux:libxentoollog1, p-cpe:/a:debian:debian_linux:xen-doc, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.20-amd64-dbg, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.20-amd64, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.20-arm64-dbg, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.20-arm64, p-cpe:/a:debian:debian_linux:xen-hypervisor-common, p-cpe:/a:debian:debian_linux:xen-system-amd64, p-cpe:/a:debian:debian_linux:xen-system-arm64, p-cpe:/a:debian:debian_linux:xen-utils-4.20-dbg, p-cpe:/a:debian:debian_linux:xen-utils-4.20, p-cpe:/a:debian:debian_linux:xen-utils-common, p-cpe:/a:debian:debian_linux:xenstore-utils

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/18/2026

Vulnerability Publication Date: 9/8/2026

Reference Information

CVE: CVE-2026-102699, CVE-2026-102700, CVE-2026-102702, CVE-2026-62437, CVE-2026-79602, CVE-2026-79603, CVE-2026-79604, CVE-2026-79608, CVE-2026-79609, CVE-2026-79610, CVE-2026-79611

Detections

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