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SUSE: 2021:1252-1 Important: Xen Infinite Loop and IOMMU Threat

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Calendar Grey April 19, 2021
Scroller Suse
Important security patch issued for SUSE, targeting two significant vulnerabilities in xen, aimed at improving both system integrity and user protection.
An update that fixes two vulnerabilities is now available

Summary

This update for xen fixes the following issues: - CVE-2021-20257: xen: infinite loop issue in the e1000 NIC emulator (bsc#1182846). - CVE-2021-27379: Fixed an issue where entries in the IOMMU were not being updated under certain circumstances due to improper backport of XSA-321 (XSA-366, bsc#1182431). Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE OpenStack Cloud Crowbar 8: zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2021-1252=1 - SUSE OpenStack Cloud 8: zypper in -t patch SUSE-OpenStack-Cloud-8-2021-1252=1 - SUSE Linux Enterprise Server for SAP 12-SP3: zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-1252=1

Topics%20covered

Topics Covered

security advisory critical important SUSE OpenStack xen issue IOMMU fix

References

#1182431 #1182846

Cross- CVE-2021-20257 CVE-2021-27379

CVSS scores:

CVE-2021-20257 (SUSE): 3.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

CVE-2021-27379 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-27379 (SUSE): 7.9 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

Affected Products:

SUSE OpenStack Cloud Crowbar 8

SUSE OpenStack Cloud 8

SUSE Linux Enterprise Server for SAP 12-SP3

SUSE Linux Enterprise Server 12-SP3-LTSS

SUSE Linux Enterprise Server 12-SP3-BCL

HPE Helion Openstack 8

https://www.suse.com/security/cve/CVE-2021-20257.html

https://www.suse.com/security/cve/CVE-2021-27379.html

https://bugzilla.suse.com/1182431

https://bugzilla.suse.com/1182846

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:1252-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical important SUSE OpenStack xen issue IOMMU fix

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