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openSUSE 15.5 Xen Important DoS Patch CVE-2026-23554 SUSE-SU-2026-1092-1

opensuse
Calendar Grey March 27, 2026
Dist Opensuse Esm H88
Update for openSUSE 15.5 addresses CVE-2026-23554 in xen with critical DoS risks requiring immediate action.
An update that solves one vulnerability can now be installed.

Description

This update for xen fixes the following issues:

* CVE-2026-23554: xen: Use after free of paging structures in EPT

(bsc#1259247, XSA-480)

Topics%20covered

Topics Covered

security advisory DoS important OpenSUSE xen paging cve-2026-23554

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 15.5

zypper in -t patch SUSE-2026-1092=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-1092=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1092=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1092=1

* SUSE Linux Enterprise Server 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1092=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1092=1

Package List

* openSUSE Leap 15.5 (aarch64 x86_64 i586)

* xen-devel-4.17.6_06-150500.3.62.2

* xen-debugsource-4.17.6_06-150500.3.62.2

* xen-libs-debuginfo-4.17.6_06-150500.3.62.2

* xen-tools-domU-debuginfo-4.17.6_06-150500.3.62.2

* xen-libs-4.17.6_06-150500.3.62.2

* xen-tools-domU-4.17.6_06-150500.3.62.2

* openSUSE Leap 15.5 (x86_64)

* xen-libs-32bit-4.17.6_06-150500.3.62.2

* xen-libs-32bit-debuginfo-4.17.6_06-150500.3.62.2

* openSUSE Leap 15.5 (aarch64 x86_64)

* xen-doc-html-4.17.6_06-150500.3.62.2

* xen-tools-debuginfo-4.17.6_06-150500.3.62.2

* xen-4.17.6_06-150500.3.62.2

* xen-tools-4.17.6_06-150500.3.62.2

* openSUSE Leap 15.5 (noarch)

* xen-tools-xendomains-wait-disk-4.17.6_06-150500.3.62.2

* openSUSE Leap 15.5 (aarch64_ilp32)

* xen-libs-64bit-debuginfo-4.17.6_06-150500.3.62.2

* xen-libs-64bit-4.17.6_06-150500.3.62.2

* SUSE Linux Enterprise Micro 5.5 (x86_64)

* xen-debugsource-4.17.6_06-150500.3.62.2

* xen-libs-debuginfo-4.17.6_06-150500.3.62.2

* xen-libs-4.17.6_06-150500.3.62.2

* SUSE Linux Enterprise High...

Read the Full Advisory

References

* bsc#1259247

## References:

* https://www.suse.com/security/cve/CVE-2026-23554.html

* https://bugzilla.suse.com/show_bug.cgi?id=1259247

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1092-1
Release Date: 2026-03-26T17:51:51Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory DoS important OpenSUSE xen paging cve-2026-23554

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