An issue was discovered in Xen 4.5.x through 4.9.x.
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · 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. Impact type from CWE-476.
Summary
An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct.
Why it matters now
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 · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:4.6.0:*:*:*:*:*:*:* | 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:4.6.5:*:*:*:*:*:*:* | 4.6.5 | 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
- 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:4.6.5:*:*:*:*:*:*:* Versions 4.6.5 Vulnerable ·Xen
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:4.6.6:*:*:*:*:*:*:* | 4.6.6 | 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:o:xen:xen:4.7.2:*:*:*:*:*:*:* | 4.7.2 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.7.3:*:*:*:*:*:*:* | 4.7.3 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.8.0:*:*:*:*:*:*:* | 4.8.0 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.8.1:*:*:*:*:*:*:* | 4.8.1 | Vulnerable | Xen |
| cpe:2.3:o:xen:xen:4.9.0:*:*:*:*:*:*:* | 4.9.0 | Vulnerable | Xen |
- cpe:2.3:o:xen:xen:4.6.6:*:*:*:*:*:*:* Versions 4.6.6 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:o:xen:xen:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.7.3:*:*:*:*:*:*:* Versions 4.7.3 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.8.0:*:*:*:*:*:*:* Versions 4.8.0 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.8.1:*:*:*:*:*:*:* Versions 4.8.1 Vulnerable ·Xen
- cpe:2.3:o:xen:xen:4.9.0:*:*:*:*:*:*:* Versions 4.9.0 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-2017-14318
- 2026-10-03 Alias added: GHSA-g75p-4v96-pxff
References
Advisory 1
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-2017-14318 · CVE Program
- CVE-2017-14318 · NVD
- FIRST EPSS
- GHSA-g75p-4v96-pxff · GitHub Advisory Database · CC BY 4.0
- CVE-2017-14318 · 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