A xen security update has been released for openSUSE Leap 15.5 and SUSE Linux Enterprise.

SUSE-SU-2023:3831-1: important: Security update for xen

# Security update for xen

Announcement ID: SUSE-SU-2023:3831-1
Rating: important
References:

* #1215145
* #1215474

Cross-References:

* CVE-2023-20588
* CVE-2023-34322

CVSS scores:

* CVE-2023-20588 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
* CVE-2023-20588 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
* CVE-2023-34322 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Products:

* Basesystem Module 15-SP5
* openSUSE Leap 15.5
* Server Applications Module 15-SP5
* SUSE Linux Enterprise Desktop 15 SP5
* SUSE Linux Enterprise High Performance Computing 15 SP5
* SUSE Linux Enterprise Real Time 15 SP5
* SUSE Linux Enterprise Server 15 SP5
* SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves two vulnerabilities can now be installed.

## Description:

This update for xen fixes the following issues:

* CVE-2023-20588: Fixed AMD CPU transitional execution leak via division by
zero (XSA-439) (bsc#1215474).
* CVE-2023-34322: Fixed top-level shadow reference dropped too early for
64-bit PV guests (XSA-438) (bsc#1215145).

## Special Instructions and Notes:

* Please reboot the system after installing this update.

## 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 openSUSE-SLE-15.5-2023-3831=1 SUSE-2023-3831=1

* Basesystem Module 15-SP5
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP5-2023-3831=1

* Server Applications Module 15-SP5
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP5-2023-3831=1

## Package List:

* openSUSE Leap 15.5 (aarch64 x86_64)
* xen-tools-debuginfo-4.17.2_04-150500.3.9.1
* xen-4.17.2_04-150500.3.9.1
* xen-doc-html-4.17.2_04-150500.3.9.1
* xen-tools-4.17.2_04-150500.3.9.1
* openSUSE Leap 15.5 (aarch64 x86_64 i586)
* xen-tools-domU-debuginfo-4.17.2_04-150500.3.9.1
* xen-devel-4.17.2_04-150500.3.9.1
* xen-libs-4.17.2_04-150500.3.9.1
* xen-tools-domU-4.17.2_04-150500.3.9.1
* xen-debugsource-4.17.2_04-150500.3.9.1
* xen-libs-debuginfo-4.17.2_04-150500.3.9.1
* openSUSE Leap 15.5 (x86_64)
* xen-libs-32bit-4.17.2_04-150500.3.9.1
* xen-libs-32bit-debuginfo-4.17.2_04-150500.3.9.1
* openSUSE Leap 15.5 (noarch)
* xen-tools-xendomains-wait-disk-4.17.2_04-150500.3.9.1
* openSUSE Leap 15.5 (aarch64_ilp32)
* xen-libs-64bit-debuginfo-4.17.2_04-150500.3.9.1
* xen-libs-64bit-4.17.2_04-150500.3.9.1
* Basesystem Module 15-SP5 (x86_64)
* xen-tools-domU-debuginfo-4.17.2_04-150500.3.9.1
* xen-libs-4.17.2_04-150500.3.9.1
* xen-tools-domU-4.17.2_04-150500.3.9.1
* xen-debugsource-4.17.2_04-150500.3.9.1
* xen-libs-debuginfo-4.17.2_04-150500.3.9.1
* Server Applications Module 15-SP5 (x86_64)
* xen-tools-4.17.2_04-150500.3.9.1
* xen-devel-4.17.2_04-150500.3.9.1
* xen-debugsource-4.17.2_04-150500.3.9.1
* xen-tools-debuginfo-4.17.2_04-150500.3.9.1
* xen-4.17.2_04-150500.3.9.1
* Server Applications Module 15-SP5 (noarch)
* xen-tools-xendomains-wait-disk-4.17.2_04-150500.3.9.1

## References:

* https://www.suse.com/security/cve/CVE-2023-20588.html
* https://www.suse.com/security/cve/CVE-2023-34322.html
* https://bugzilla.suse.com/show_bug.cgi?id=1215145
* https://bugzilla.suse.com/show_bug.cgi?id=1215474