CWE Code: 264
Vulnerability Type: privilege_escalation
CVSS Score: 4.4
CWE Name:  Permissions Privileges and Access Controls
Summary: the x86 emulator in kvm 83, when a guest is configured for symmetric multiprocessing (smp), does not properly restrict writing of segment selectors to segment registers, which might allow guest os users to cause a denial of service (guest os crash) or gain privileges on the guest os by leveraging access to a (1) io port or (2) mmio region, and replacing an instruction in between emulator entry and instruction fetch.
Access Authentication: NONE
Access Complexity: MEDIUM
Access Vector: LOCAL
Impact (C/I/A): PARTIAL/PARTIAL/PARTIAL
Published Date: 2010-03-05
Last Modified Date: 2017-09-19