CVE-2021-27379

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-27379

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27379.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-27379

Related

Published

2021-02-18T17:15:15Z

Modified

2024-09-18T01:00:21Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

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.

References

Affected packages

Debian:11 / xen

Package

Name: xen
Purl: pkg:deb/debian/xen?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.14.0+80-gd101b417b7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / xen

Package

Name: xen
Purl: pkg:deb/debian/xen?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.14.0+80-gd101b417b7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / xen

Package

Name: xen
Purl: pkg:deb/debian/xen?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.14.0+80-gd101b417b7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}