Name: CVE-2021-27379: Undefined Security Weakness
Creator: Rapid7
Published: 2021-02-18T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-27379, CVSS 7.8, EPSS 0.0007

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.

CVSS Details

CVSS 3.1 Base Score: 7.8
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade xen	Apr 12, 2021	Feb 18, 2021
Suse	—	Upgrade xen-toolsUpgrade xenUpgrade xen-develUpgrade xen-libs-32bitUpgrade xen-doc-htmlUpgrade xen-libsUpgrade xen-tools-domU	Apr 20, 2021	Feb 18, 2021

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CVSS Details

Covered by Rapid7

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