DEBIAN-CVE-2021-28706

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Source
https://security-tracker.debian.org/tracker/CVE-2021-28706
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-28706.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-28706
Upstream
Published
2021-11-24T01:15:08Z
Modified
2025-09-25T23:26:56.676074Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

guests may exceed their designated memory limit When a guest is permitted to have close to 16TiB of memory, it may be able to issue hypercalls to increase its memory allocation beyond the administrator established limit. This is a result of a calculation done with 32-bit precision, which may overflow. It would then only be the overflowed (and hence small) number which gets compared against the established upper bound.

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
4.14.3+32-g9de3671772-1~deb11u1

Affected versions

4.*

4.14.2+25-gb6a8c4f72d-2
4.14.3-1~deb11u1
4.14.3-1

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
4.14.3+32-g9de3671772-1

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
4.14.3+32-g9de3671772-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
4.14.3+32-g9de3671772-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}