🛡️ UBUNTU-CVE-2021-28706
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-11-24
Updated 2026-06-08
Modified 2026-05-20
Fix URL N/A

Affected Packages

Software From version Fixed in
xen

Exploit Protection

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