CVE-2016-6259
6.2
MEDIUM
CVSS 3.1
EPSS 0.27%
Description
Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.
How to fix CVE-2016-6259
To remediate CVE-2016-6259, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.7.0-r0 or later
- —upgrade to 4.8.0~rc3-1 or later
Is CVE-2016-6259 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.7.0-r0
- from 0, < 4.8.0~rc3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.2 | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |