Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain…
Priority LOW 33CWE-362Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.
Why it matters now
EPSS 0.00292 21st 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:a:qemu:qemu:*:*:*:*:*:*:*:* | up to 2.7.1 | Vulnerable | QEMU |
| cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:* | 2.8.0 rc0 | Vulnerable | QEMU |
| 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:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 2.7.1 Vulnerable ·QEMU
- cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:* Versions 2.8.0 rc0 Vulnerable ·QEMU
- 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: Important. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
- Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
- Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
- Red Hat OpenStack Platform 8 (Liberty)
Timeline
- 2026-10-02 Threatist record created from CVE-2016-9381
- 2026-10-03 Alias added: GHSA-fg67-6qhp-f8mj
References
Sources
- CVE-2016-9381 · CVE Program
- CVE-2016-9381 · NVD
- FIRST EPSS
- GHSA-fg67-6qhp-f8mj · GitHub Advisory Database · CC BY 4.0
- CVE-2016-9381 · Red Hat security data · CC BY 4.0
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