Upstream information

CVE-2026-42495 at MITRE

Description

[This CNA information record relates to multiple CVEs; the
text explains which aspects/vulnerabilities correspond to which CVE.]

The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver
derives several lengths directly from attacker-controlled on-disk fields
without validating them:

* The directory loop itself assumes a good record length. This is
CVE-2026-42494.

* The calculation of the System Use area may underflow. This is
CVE-2026-42495.

* The Rock Ridge extension loop assumes a good (inner) record length.
This is CVE-2026-62423.

* The Rock Ridge NM record processing assumes a good entry length.
This is CVE-2026-62424.

* The Rock Ridge CE record processing assumes a good size and offset.
This is CVE-2026-62425.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 8.1
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 8.9
Vector CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Attack Vector Local
Attack Complexity Low
Attack Requirements Present
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact High
Subsequent System Integrity Impact High
Subsequent System Availability Impact High
CVSSv4 Version 4.0

Note from the SUSE Security Team on the xen package

This issue likely only affects the XEN hypervisor itself, unless otherwise stated. The userland utilities in -tools and libraries in -libs are shipped together with the xen hypervisor as they are built from one source and do not contain hypervisor specific fixes.

SUSE Bugzilla entry: 1271530 [NEW]

No SUSE Security Announcements cross referenced.

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • xen >= 4.17.6_14-150500.3.76.3
  • xen-devel >= 4.17.6_14-150500.3.76.3
  • xen-libs >= 4.17.6_14-150500.3.76.3
  • xen-tools >= 4.17.6_14-150500.3.76.3
  • xen-tools-domU >= 4.17.6_14-150500.3.76.3
  • xen-tools-xendomains-wait-disk >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • xen >= 4.17.6_14-150500.3.76.3
  • xen-devel >= 4.17.6_14-150500.3.76.3
  • xen-libs >= 4.17.6_14-150500.3.76.3
  • xen-tools >= 4.17.6_14-150500.3.76.3
  • xen-tools-domU >= 4.17.6_14-150500.3.76.3
  • xen-tools-xendomains-wait-disk >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise Micro 5.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise Micro 5.4
  • xen-libs >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise Micro 5.5
  • xen-libs >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise Server 15 SP4-LTSS
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise Server 15 SP4-LTSS
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise Server 15 SP5-LTSS
  • xen >= 4.17.6_14-150500.3.76.3
  • xen-devel >= 4.17.6_14-150500.3.76.3
  • xen-libs >= 4.17.6_14-150500.3.76.3
  • xen-tools >= 4.17.6_14-150500.3.76.3
  • xen-tools-domU >= 4.17.6_14-150500.3.76.3
  • xen-tools-xendomains-wait-disk >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise Server 15 SP5-LTSS
  • xen >= 4.17.6_14-150500.3.76.3
  • xen-devel >= 4.17.6_14-150500.3.76.3
  • xen-libs >= 4.17.6_14-150500.3.76.3
  • xen-tools >= 4.17.6_14-150500.3.76.3
  • xen-tools-domU >= 4.17.6_14-150500.3.76.3
  • xen-tools-xendomains-wait-disk >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise Server 15 SP6-LTSS
  • xen >= 4.18.5_20-150600.3.53.3
  • xen-devel >= 4.18.5_20-150600.3.53.3
  • xen-libs >= 4.18.5_20-150600.3.53.3
  • xen-tools >= 4.18.5_20-150600.3.53.3
  • xen-tools-domU >= 4.18.5_20-150600.3.53.3
  • xen-tools-xendomains-wait-disk >= 4.18.5_20-150600.3.53.3
SUSE Linux Enterprise Server 15 SP6-LTSS
  • xen >= 4.18.5_20-150600.3.53.3
  • xen-devel >= 4.18.5_20-150600.3.53.3
  • xen-libs >= 4.18.5_20-150600.3.53.3
  • xen-tools >= 4.18.5_20-150600.3.53.3
  • xen-tools-domU >= 4.18.5_20-150600.3.53.3
  • xen-tools-xendomains-wait-disk >= 4.18.5_20-150600.3.53.3
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • xen >= 4.17.6_14-150500.3.76.3
  • xen-devel >= 4.17.6_14-150500.3.76.3
  • xen-libs >= 4.17.6_14-150500.3.76.3
  • xen-tools >= 4.17.6_14-150500.3.76.3
  • xen-tools-domU >= 4.17.6_14-150500.3.76.3
  • xen-tools-xendomains-wait-disk >= 4.17.6_14-150500.3.76.3
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • xen >= 4.18.5_20-150600.3.53.3
  • xen-devel >= 4.18.5_20-150600.3.53.3
  • xen-libs >= 4.18.5_20-150600.3.53.3
  • xen-tools >= 4.18.5_20-150600.3.53.3
  • xen-tools-domU >= 4.18.5_20-150600.3.53.3
  • xen-tools-xendomains-wait-disk >= 4.18.5_20-150600.3.53.3
SUSE Manager Proxy LTS 4.3
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Manager Retail Branch Server LTS 4.3
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3
SUSE Manager Server LTS 4.3
  • xen >= 4.16.7_12-150400.4.89.3
  • xen-devel >= 4.16.7_12-150400.4.89.3
  • xen-libs >= 4.16.7_12-150400.4.89.3
  • xen-tools >= 4.16.7_12-150400.4.89.3
  • xen-tools-domU >= 4.16.7_12-150400.4.89.3
  • xen-tools-xendomains-wait-disk >= 4.16.7_12-150400.4.89.3

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 xen Affected
SUSE Linux Enterprise Micro 5.3 xen In progress
SUSE Linux Enterprise Micro 5.4 xen In progress
SUSE Linux Enterprise Micro 5.5 xen In progress
SUSE Linux Enterprise Module for Basesystem 15 SP7 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 xen Affected
SUSE Linux Enterprise Server 15 SP7 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 xen Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS xen In progress
SUSE Linux Enterprise High Performance Computing 15 SP5 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS xen In progress
SUSE Linux Enterprise Module for Basesystem 15 SP4 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 xen Affected
SUSE Linux Enterprise Server 12 SP5 xen Affected
SUSE Linux Enterprise Server 12 SP5-LTSS xen Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security xen Affected
SUSE Linux Enterprise Server 15 SP4 xen Affected
SUSE Linux Enterprise Server 15 SP4-LTSS xen In progress
SUSE Linux Enterprise Server 15 SP5 xen Affected
SUSE Linux Enterprise Server 15 SP5-LTSS xen In progress
SUSE Linux Enterprise Server 15 SP6 xen Affected
SUSE Linux Enterprise Server 15 SP6-LTSS xen In progress
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 xen Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 xen In progress
SUSE Manager Proxy 4.3 xen Affected
SUSE Manager Proxy LTS 4.3 xen In progress
SUSE Manager Retail Branch Server 4.3 xen Affected
SUSE Manager Retail Branch Server LTS 4.3 xen In progress
SUSE Manager Server 4.3 xen Affected
SUSE Manager Server LTS 4.3 xen In progress
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 xen Affected
SUSE Enterprise Storage 6 xen Affected
SUSE Enterprise Storage 7 xen Affected
SUSE Enterprise Storage 7.1 xen Affected
SUSE Linux Enterprise Desktop 15 SP1 xen Affected
SUSE Linux Enterprise Desktop 15 SP2 xen Affected
SUSE Linux Enterprise Desktop 15 SP3 xen Affected
SUSE Linux Enterprise Desktop 15 SP4 xen Affected
SUSE Linux Enterprise Desktop 15 SP5 xen Affected
SUSE Linux Enterprise Desktop 15 SP6 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS xen Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS xen In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS xen In progress
SUSE Linux Enterprise High Performance Computing 15 SP6 xen Affected
SUSE Linux Enterprise Micro 5.0 xen Affected
SUSE Linux Enterprise Micro 5.1 xen Affected
SUSE Linux Enterprise Micro 5.2 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 xen Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 xen Affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 xen Affected
SUSE Linux Enterprise Real Time 15 SP2 xen Affected
SUSE Linux Enterprise Real Time 15 SP3 xen Affected
SUSE Linux Enterprise Real Time 15 SP4 xen Affected
SUSE Linux Enterprise Server 15 SP1 xen Affected
SUSE Linux Enterprise Server 15 SP1-BCL xen Affected
SUSE Linux Enterprise Server 15 SP1-LTSS xen Affected
SUSE Linux Enterprise Server 15 SP2 xen Affected
SUSE Linux Enterprise Server 15 SP2-BCL xen Affected
SUSE Linux Enterprise Server 15 SP2-LTSS xen Affected
SUSE Linux Enterprise Server 15 SP3 xen Affected
SUSE Linux Enterprise Server 15 SP3-BCL xen Affected
SUSE Linux Enterprise Server 15 SP3-LTSS xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 xen Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 xen In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 xen In progress
SUSE Linux Enterprise Software Development Kit 12 SP5 xen Affected
SUSE Manager Proxy 4.0 xen Affected
SUSE Manager Proxy 4.1 xen Affected
SUSE Manager Proxy 4.2 xen Affected
SUSE Manager Retail Branch Server 4.0 xen Affected
SUSE Manager Retail Branch Server 4.1 xen Affected
SUSE Manager Retail Branch Server 4.2 xen Affected
SUSE Manager Server 4.0 xen Affected
SUSE Manager Server 4.1 xen Affected
SUSE Manager Server 4.2 xen Affected
openSUSE Leap 15.3 xen Affected
openSUSE Leap 15.4 xen Affected
openSUSE Leap 15.5 xen Affected
openSUSE Leap 15.6 xen Affected
openSUSE Leap Micro 5.2 xen Affected
openSUSE Leap Micro 5.3 xen Affected
openSUSE Leap Micro 5.4 xen Affected
openSUSE Leap Micro 5.5 xen Affected

SUSE Timeline for this CVE

CVE page created: Tue Jul 28 15:30:21 2026
CVE page last modified: Tue Jul 28 17:30:58 2026