CVE-2016-4480

8.4HIGH

Key Information:

Vendor
Oracle
Status
Vm Server
Vendor
CVE Published:
18 May 2016

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.

References

http://www.oracle.com/technetwork/topics/security/ovmbull...
x_refsource_CONFIRM
http://www.securityfocus.com/bid/90710
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1035901
vdb-entryx_refsource_SECTRACK

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.