Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow…
Priority LOW 38CWE-682Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-215.
Why it matters now
EPSS 0.00421 36th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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: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:4.6.2:*:*:*:*:*:*:* | 4.6.2 | 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:4.6.5:*:*:*:*:*:*:* | 4.6.5 | Vulnerable | Xen |
- 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:4.6.2:*:*:*:*:*:*:* Versions 4.6.2 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:4.6.5:*:*:*:*:*:*:* Versions 4.6.5 Vulnerable ·Xen
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8905
- 2026-10-03 Alias added: GHSA-fff9-ccrg-mjcr
References
More Xen vulnerabilities
- TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
- TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
- TI-2015-04333 The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used… CVSS 2.0HIGH 9.3
- TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
- TI-2018-06436 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures… CVSS 3.0HIGH 7.8
- TI-2024-20522 x86: Incorrect logic for BTC/SRSO mitigations CVSS 3.1HIGH 7.5
Sources
- CVE-2017-8905 · CVE Program
- CVE-2017-8905 · NVD
- FIRST EPSS
- GHSA-fff9-ccrg-mjcr · GitHub Advisory Database · CC BY 4.0
- CVE-2017-8905 · 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