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openSUSE Leap 15.3 xen Crucial DoS Vulnerability Patch SUSE-SU-2026-1646-1

opensuse
Calendar Grey April 28, 2026
Dist Opensuse Esm H88
Update available for openSUSE to address critical vulnerabilities in xen affecting system performance and security.
An update that solves three vulnerabilities can now be installed.

Description

This update for xen fixes the following issues:

* CVE-2025-54505: floating point divider state sampling on AMD CPUs AMD-

SN-7053 (bsc#1262428).

* CVE-2026-23557: Xenstored DoS via XS_RESET_WATCHES command (bsc#1262178).

* CVE-2026-23558: grant table v2 race in status page mapping (bsc#1262180).

## Special Instructions and Notes:

* Please reboot the system after installing this update.

Topics%20covered

Topics Covered

security advisory denial of service update 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 15.3

zypper in -t patch SUSE-2026-1645=1

* SUSE Linux Enterprise Micro 5.2

zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1645=1

* SUSE Linux Enterprise Micro for Rancher 5.2

zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1645=1

Package List

* openSUSE Leap 15.3 (aarch64 x86_64 i586)

* xen-debugsource-4.14.6_30-150300.3.97.1

* xen-tools-domU-debuginfo-4.14.6_30-150300.3.97.1

* xen-tools-domU-4.14.6_30-150300.3.97.1

* xen-libs-debuginfo-4.14.6_30-150300.3.97.1

* xen-libs-4.14.6_30-150300.3.97.1

* xen-devel-4.14.6_30-150300.3.97.1

* openSUSE Leap 15.3 (x86_64)

* xen-libs-32bit-debuginfo-4.14.6_30-150300.3.97.1

* xen-libs-32bit-4.14.6_30-150300.3.97.1

* openSUSE Leap 15.3 (aarch64 x86_64)

* xen-doc-html-4.14.6_30-150300.3.97.1

* xen-4.14.6_30-150300.3.97.1

* xen-tools-debuginfo-4.14.6_30-150300.3.97.1

* xen-tools-4.14.6_30-150300.3.97.1

* openSUSE Leap 15.3 (noarch)

* xen-tools-xendomains-wait-disk-4.14.6_30-150300.3.97.1

* openSUSE Leap 15.3 (aarch64_ilp32)

* xen-libs-64bit-4.14.6_30-150300.3.97.1

* xen-libs-64bit-debuginfo-4.14.6_30-150300.3.97.1

* SUSE Linux Enterprise Micro 5.2 (x86_64)

* xen-debugsource-4.14.6_30-150300.3.97.1

* xen-libs-4.14.6_30-150300.3.97.1

* xen-libs-debuginfo-4.14.6_30-150300.3.97.1

* SUSE Linux Enterprise Micro for...

Read the Full Advisory

References

* bsc#1262178

* bsc#1262180

* bsc#1262428

## References:

* https://www.suse.com/security/cve/CVE-2025-54505.html

* https://www.suse.com/security/cve/CVE-2026-23557.html

* https://www.suse.com/security/cve/CVE-2026-23558.html

* https://bugzilla.suse.com/show_bug.cgi?id=1262178

* https://bugzilla.suse.com/show_bug.cgi?id=1262180

* https://bugzilla.suse.com/show_bug.cgi?id=1262428

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1645-1
Release Date: 2026-04-28T14:46:53Z
Affected Products: * openSUSE Leap 15.3 * SUSE Linux Enterprise Micro 5.2 * SUSE Linux Enterprise Micro for Rancher 5.2

Topics%20covered

Topics Covered

security advisory denial of service update important OpenSUSE xen

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