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TI-2016-03852 Aliases CVE-2016-4480GHSA-mrv5-xm7c-h532

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does…

Priority LOW 37CWE-264Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-264.

Summary

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

Why it matters now

EPSS 0.00542 45th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*3.2VulnerableOracle
cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*3.3VulnerableOracle
cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*3.4VulnerableOracle
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*up to 4.6.1VulnerableXen
  • cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Oracle
  • cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* Versions up to 4.6.1 Vulnerable ·Xen

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

  1. 2026-10-02 Threatist record created from CVE-2016-4480
  2. 2026-10-03 Alias added: GHSA-mrv5-xm7c-h532

References

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences