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openSUSE Leap 15.3 Xen Moderate Security Update 2026-0303-1

opensuse
Calendar Grey January 28, 2026
Dist Opensuse Esm H88
Critical update for openSUSE addressing six security flaws in Xen, enhancing system safety and stability.
An update that solves six vulnerabilities can now be installed.

Description

This update for xen fixes the following issues:

Security fixes:

* CVE-2025-58150: Fixed buffer overrun with shadow paging and tracing

(XSA-477) (bsc#1256745)

* CVE-2026-23553: Fixed incomplete IBPB for vCPU isolation (XSA-479)

(bsc#1256747)

* CVE-2025-58149: Fixed incorrect removal od permissions on PCI device unplug

allow PV guests to access memory of devices no longer assigned to it

(XSA-476) (bsc#1252692)

* CVE-2025-27466, CVE-2025-58142, CVE-2025-58143: Fixed multiple

vulnerabilities in the Viridian interface (XSA-472) (bsc#1248807)

Other fixes:

* Fixed virtxend service restart. Caused by a failure to start xenstored

(bsc#1254180)

## Special Instructions and Notes:

* Please reboot the system after installing this update.

Topics%20covered

Topics Covered

security advisory moderate buffer overrun OpenSUSE vcpu isolation pci device access

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-2026-303=1

* SUSE Linux Enterprise Micro 5.2

zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-303=1

* SUSE Linux Enterprise Micro for Rancher 5.2

zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-303=1

Package List

* openSUSE Leap 15.3 (aarch64 x86_64 i586)

* xen-debugsource-4.14.6_28-150300.3.94.1

* xen-devel-4.14.6_28-150300.3.94.1

* xen-tools-domU-debuginfo-4.14.6_28-150300.3.94.1

* xen-libs-4.14.6_28-150300.3.94.1

* xen-libs-debuginfo-4.14.6_28-150300.3.94.1

* xen-tools-domU-4.14.6_28-150300.3.94.1

* openSUSE Leap 15.3 (x86_64)

* xen-libs-32bit-4.14.6_28-150300.3.94.1

* xen-libs-32bit-debuginfo-4.14.6_28-150300.3.94.1

* openSUSE Leap 15.3 (aarch64 x86_64)

* xen-tools-debuginfo-4.14.6_28-150300.3.94.1

* xen-doc-html-4.14.6_28-150300.3.94.1

* xen-4.14.6_28-150300.3.94.1

* xen-tools-4.14.6_28-150300.3.94.1

* openSUSE Leap 15.3 (noarch)

* xen-tools-xendomains-wait-disk-4.14.6_28-150300.3.94.1

* openSUSE Leap 15.3 (aarch64_ilp32)

* xen-libs-64bit-debuginfo-4.14.6_28-150300.3.94.1

* xen-libs-64bit-4.14.6_28-150300.3.94.1

* SUSE Linux Enterprise Micro 5.2 (x86_64)

* xen-debugsource-4.14.6_28-150300.3.94.1

* xen-libs-4.14.6_28-150300.3.94.1

* xen-libs-debuginfo-4.14.6_28-150300.3.94.1

* SUSE Linux Enterprise Micro for...

Read the Full Advisory

References

* bsc#1248807

* bsc#1252692

* bsc#1254180

* bsc#1256745

* bsc#1256747

## References:

* https://www.suse.com/security/cve/CVE-2025-27466.html

* https://www.suse.com/security/cve/CVE-2025-58142.html

* https://www.suse.com/security/cve/CVE-2025-58143.html

* https://www.suse.com/security/cve/CVE-2025-58149.html

* https://www.suse.com/security/cve/CVE-2025-58150.html

* https://www.suse.com/security/cve/CVE-2026-23553.html

* https://bugzilla.suse.com/show_bug.cgi?id=1248807

* https://bugzilla.suse.com/show_bug.cgi?id=1252692

* https://bugzilla.suse.com/show_bug.cgi?id=1254180

* https://bugzilla.suse.com/show_bug.cgi?id=1256745

* https://bugzilla.suse.com/show_bug.cgi?id=1256747

Announcement ID: SUSE-SU-2026:0303-1
Release Date: 2026-01-27T16:14:45Z
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 moderate buffer overrun OpenSUSE vcpu isolation pci device access

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