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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-02-18T15:05:25

Updated: 2024-08-03T20:48:16.398Z

Reserved: 2021-02-18T00:00:00

Link: CVE-2021-27379

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-18T17:15:15.867

Modified: 2024-11-21T05:57:52.597

Link: CVE-2021-27379

cve-icon Redhat

No data.