Security Advisory

CVE-2021-27379

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2021-02-18 15:05:25

Last updated 2024-08-03 20:48:16

Assigner mitre

CVSS score not scored

State PUBLISHED

Description

An issue was 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.

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