CVE-2021-28700
4.9
MEDIUM
CVSS 3.1
EPSS 2.1%
Description
xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.
How to fix CVE-2021-28700
To remediate CVE-2021-28700, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.13.3-r2 or later
- —upgrade to 4.14.3-1~deb11u1 or later
Is CVE-2021-28700 being exploited?
Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.13.3-r2
- from 0, < 4.14.3-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |