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openSUSE Leap 15.4 xen Moderate Memory Access Buffer Overrun Vulnerability

opensuse
Calendar Grey February 5, 2026
Dist Opensuse Esm H88
A security update for openSUSE xen addresses three issues including buffer overrun and vCPU isolation threats.
An update that solves three vulnerabilities and has one security fix 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)

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 memory access OpenSUSE vcpu isolation

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 15.4

zypper in -t patch SUSE-2026-394=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-394=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-394=1

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-394=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-394=1

Package List

* openSUSE Leap 15.4 (aarch64 x86_64 i586)

* xen-debugsource-4.16.7_06-150400.4.78.1

* xen-tools-domU-debuginfo-4.16.7_06-150400.4.78.1

* xen-libs-4.16.7_06-150400.4.78.1

* xen-tools-domU-4.16.7_06-150400.4.78.1

* xen-devel-4.16.7_06-150400.4.78.1

* xen-libs-debuginfo-4.16.7_06-150400.4.78.1

* openSUSE Leap 15.4 (x86_64)

* xen-libs-32bit-4.16.7_06-150400.4.78.1

* xen-libs-32bit-debuginfo-4.16.7_06-150400.4.78.1

* openSUSE Leap 15.4 (aarch64 x86_64)

* xen-tools-4.16.7_06-150400.4.78.1

* xen-tools-debuginfo-4.16.7_06-150400.4.78.1

* xen-4.16.7_06-150400.4.78.1

* xen-doc-html-4.16.7_06-150400.4.78.1

* openSUSE Leap 15.4 (noarch)

* xen-tools-xendomains-wait-disk-4.16.7_06-150400.4.78.1

* openSUSE Leap 15.4 (aarch64_ilp32)

* xen-libs-64bit-4.16.7_06-150400.4.78.1

* xen-libs-64bit-debuginfo-4.16.7_06-150400.4.78.1

* SUSE Linux Enterprise Micro for Rancher 5.3 (x86_64)

* xen-libs-debuginfo-4.16.7_06-150400.4.78.1

* xen-libs-4.16.7_06-150400.4.78.1

* xen-debugsource-4.16.7_06-150400.4.78.1

* SUSE Linux Enterprise...

Read the Full Advisory

References

* bsc#1252692

* bsc#1254180

* bsc#1256745

* bsc#1256747

## References:

* 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=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-2026:0394-1
Release Date: 2026-02-05T15:42:11Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4

Topics%20covered

Topics Covered

security advisory moderate buffer overrun memory access OpenSUSE vcpu isolation

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