{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_security_advisory","csaf_version":"2.0","distribution":{"text":"Copyright 2023 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"Security update for xen","title":"Title of the patch"},{"category":"description","text":"This update for xen fixes the following issues:\n\n- 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)\t  \n- Fixed  an issue where xenstored was crashing with segfault (bsc#1182155).  \n","title":"Description of the patch"},{"category":"details","text":"SUSE-2021-1268,SUSE-OpenStack-Cloud-7-2021-1268,SUSE-SLE-SERVER-12-SP2-BCL-2021-1268","title":"Patchnames"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"self","summary":"URL for SUSE-SU-2021:1268-1","url":"https://www.suse.com/support/update/announcement/2021/suse-su-20211268-1/"},{"category":"external","summary":"SUSE ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"self","summary":"URL of this CSAF notice","url":"https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_1268-1.json"},{"category":"self","summary":"E-Mail link for SUSE-SU-2021:1268-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2021-April/008658.html"},{"category":"self","summary":"SUSE Bug 1182155","url":"https://bugzilla.suse.com/1182155"},{"category":"self","summary":"SUSE Bug 1182431","url":"https://bugzilla.suse.com/1182431"},{"category":"self","summary":"SUSE CVE CVE-2021-27379 page","url":"https://www.suse.com/security/cve/CVE-2021-27379/"}],"title":"Security update for 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discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.","title":"Vulnerability description"}],"product_status":{"fixed":["SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-domU-4.7.6_14-43.76.1.x86_64"]},"references":[{"category":"external","summary":"CVE-2021-27379","url":"https://www.suse.com/security/cve/CVE-2021-27379"},{"category":"external","summary":"SUSE Bug 1182431 for CVE-2021-27379","url":"https://bugzilla.suse.com/1182431"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-domU-4.7.6_14-43.76.1.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":7.9,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H","version":"3.1"},"products":["SUSE Linux Enterprise Server 12 SP2-BCL:xen-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE Linux Enterprise Server 12 SP2-BCL:xen-tools-domU-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-doc-html-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-32bit-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-libs-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-4.7.6_14-43.76.1.x86_64","SUSE OpenStack Cloud 7:xen-tools-domU-4.7.6_14-43.76.1.x86_64"]}],"threats":[{"category":"impact","date":"2021-04-20T08:55:04Z","details":"important"}],"title":"CVE-2021-27379"}]}