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openSUSE Leap 15.6 Important Xen Denial of Service Fix SUSE-SU-2026-2329-1

opensuse
Calendar Grey June 10, 2026
Scroller Opensuse
Critical vulnerabilities in xen require immediate attention for openSUSE users to ensure system security and functionality.
An update that solves four vulnerabilities can now be installed.

Description

This update for xen fixes the following issues:

* CVE-2026-42487: x86 HVM I/O port list traversal (bsc#1266952).

* CVE-2026-42488: x86: mismatched mapcache metadata (bsc#1266955).

* CVE-2026-42489,CVE-2026-42490: domctl lock open to abuse (bsc#1266953).

## Special Instructions and Notes:

* Please reboot the system after installing this update.

Topics%20covered

Topics Covered

security advisory denial of service security issue important OpenSUSE xen

Patch

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like

YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2329=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2329=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2329=1

Package List

* openSUSE Leap 15.6 (aarch64 x86_64 i586)

* xen-devel-4.18.5_18-150600.3.50.1

* xen-libs-debuginfo-4.18.5_18-150600.3.50.1

* xen-libs-4.18.5_18-150600.3.50.1

* xen-tools-domU-4.18.5_18-150600.3.50.1

* xen-debugsource-4.18.5_18-150600.3.50.1

* xen-tools-domU-debuginfo-4.18.5_18-150600.3.50.1

* openSUSE Leap 15.6 (x86_64)

* xen-libs-32bit-4.18.5_18-150600.3.50.1

* xen-libs-32bit-debuginfo-4.18.5_18-150600.3.50.1

* openSUSE Leap 15.6 (aarch64 x86_64)

* xen-tools-4.18.5_18-150600.3.50.1

* xen-4.18.5_18-150600.3.50.1

* xen-doc-html-4.18.5_18-150600.3.50.1

* xen-tools-debuginfo-4.18.5_18-150600.3.50.1

* openSUSE Leap 15.6 (noarch)

* xen-tools-xendomains-wait-disk-4.18.5_18-150600.3.50.1

* openSUSE Leap 15.6 (aarch64_ilp32)

* xen-libs-64bit-4.18.5_18-150600.3.50.1

* xen-libs-64bit-debuginfo-4.18.5_18-150600.3.50.1

* SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)

* xen-devel-4.18.5_18-150600.3.50.1

* xen-tools-debuginfo-4.18.5_18-150600.3.50.1

* xen-tools-4.18.5_18-150600.3.50.1

*...

Read the Full Advisory

References

* bsc#1266952

* bsc#1266953

* bsc#1266955

## References:

* https://www.suse.com/security/cve/CVE-2026-42487.html

* https://www.suse.com/security/cve/CVE-2026-42488.html

* https://www.suse.com/security/cve/CVE-2026-42489.html

* https://www.suse.com/security/cve/CVE-2026-42490.html

* https://bugzilla.suse.com/show_bug.cgi?id=1266952

* https://bugzilla.suse.com/show_bug.cgi?id=1266953

* https://bugzilla.suse.com/show_bug.cgi?id=1266955

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2329-1
Release Date: 2026-06-10T07:39:36Z
Affected Products: * openSUSE Leap 15.6 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP6

Topics%20covered

Topics Covered

security advisory denial of service security issue important OpenSUSE xen

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