CVE-2020-27671

Description

An issue was discovered in Xen through 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.

7.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.12%

Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory xen.org Vendor Advisory xen.org

Affected: n/a n/a

References

Link	Tags
http://xenbits.xen.org/xsa/advisory-346.html	patch vendor advisory
https://xenbits.xen.org/xsa/advisory-346.html	patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html	vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html	vendor advisory mailing list third party advisory
https://security.gentoo.org/glsa/202011-06	third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/	vendor advisory
https://www.debian.org/security/2020/dsa-4804	third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2021/01/19/8	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-27671?: CVE-2020-27671 has been scored as a high severity vulnerability.
How to fix CVE-2020-27671?: To fix CVE-2020-27671, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27671 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-27671 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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