An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause…
Priority LOW 26Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- 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
An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.
Why it matters now
EPSS 0.00425 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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | up to 4.11.1 | Vulnerable | Xen |
| cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:7.1:cu1:*:*:ltsr:*:*:* | 7.1 cu1 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Citrix |
| cpe:2.3:a:citrix:xenserver:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Citrix |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* Versions up to 4.11.1 Vulnerable ·Xen
- cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:7.1:cu1:*:*:ltsr:*:*:* Versions 7.1 cu1 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Citrix
- cpe:2.3:a:citrix:xenserver:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Citrix
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. 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-2018-19965
- 2026-10-03 Alias added: GHSA-c3g2-qp55-6gjf
References
Sources
- CVE-2018-19965 · CVE Program
- CVE-2018-19965 · NVD
- FIRST EPSS
- GHSA-c3g2-qp55-6gjf · GitHub Advisory Database · CC BY 4.0
- CVE-2018-19965 · 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