The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows…
Priority LOW 27CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.
Why it matters now
EPSS 0.00428 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 20
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:* | 4.4.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:* | 4.4.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:* | 4.4.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:* | 4.4.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:* | 4.4.4 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* | 4.5.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* | 4.5.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:* | 4.5.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:* | 4.5.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:* | 4.5.5 | Vulnerable | Xen |
- cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:* Versions 4.4.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:* Versions 4.4.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:* Versions 4.4.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:* Versions 4.4.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:* Versions 4.4.4 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* Versions 4.5.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:* Versions 4.5.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:* Versions 4.5.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:* Versions 4.5.5 Vulnerable ·Xen
Show 10 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:* | 4.6.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* | 4.6.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:* | 4.6.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:* | 4.6.4 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:* | 4.7.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:* | 4.7.1 | Vulnerable | Xen |
| cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:* | 6.0.2 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:* | 6.2.0 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:* | 6.5 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Citrix |
- cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:* Versions 4.6.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* Versions 4.6.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:* Versions 4.6.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:* Versions 4.6.4 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:* Versions 4.7.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:* Versions 4.7.1 Vulnerable ·Xen
- cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:* Versions 6.0.2 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:* Versions 6.2.0 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:* Versions 6.5 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Citrix
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2016-9385
- 2026-10-03 Alias added: GHSA-3fqp-fm32-6g9x
References
Sources
- CVE-2016-9385 · CVE Program
- CVE-2016-9385 · NVD
- FIRST EPSS
- GHSA-3fqp-fm32-6g9x · GitHub Advisory Database · CC BY 4.0
- CVE-2016-9385 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences