CVE-2020-27672
7.0
HIGH
CVSS 3.1
EPSS 0.04%
Description
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.
How to fix CVE-2020-27672
To remediate CVE-2020-27672, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.12.4-r0 or later
- —upgrade to 4.14.0+80-gd101b417b7-1 or later
Is CVE-2020-27672 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.12.4-r0
- from 0, < 4.14.0+80-gd101b417b7-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |