Published: 22/10/2020 Updated: 07/11/2023

CVSS v2 Base Score: 6.9 | Impact Score: 10 | Exploitability Score: 3.4

CVSS v3 Base Score: 7.8 | Impact Score: 6 | Exploitability Score: 1.1

VMScore: 614

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

An issue exists in Xen up to and including 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.

Vulnerable Product	Search on Vulmon	Subscribe to Product
xen xen
opensuse leap 15.1
opensuse leap 15.2
debian debian linux 10.0
fedoraproject fedora 31

Debian Bug report logs - #976109 xen: CVE-2020-29040 Package: src:xen; Maintainer for src:xen is Debian Xen Team <pkg-xen-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sun, 29 Nov 2020 19:54:01 UTC Severity: grave Tags: security, upstream Found in version xen/4140+80-g ...

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, privilege escalation or information leaks For the stable distribution (buster), these problems have been fixed in version 4114+57-g41a822c392-1 We recommend that you upgrade your xen packages For the detailed security status of xen ple ...

Description of Problem Several security issues have been identified in Citrix Hypervisor (formerly Citrix XenServer) that may allow: unprivileged code in a PV guest VM to compromise that PV guest VM privileged code in a guest VM to cause the host to crash or become unresponsive privileged code in an HVM guest VM, to which the host administrator has ...

oss-sec mailing list archives   By Date By Thread </form>    Xen Security Advisory 346 v3 (CVE-2020-27671) - undue deferral of IOMMU TLB flushes  <!--X-Head-of- ...

NVD-CWE-noinfo https://xenbits.xen.org/xsa/advisory-346.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html https://security.gentoo.org/glsa/202011-06 https://www.debian.org/security/2020/dsa-4804 http://www.openwall.com/lists/oss-security/2021/01/19/8 http://xenbits.xen.org/xsa/advisory-346.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976109 https://nvd.nist.gov https://www.debian.org/security/2020/dsa-4804

CVE-2020-27671

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