CWE Code: 264
Vulnerability Type: privilege_escalation
CVSS Score: 5.8
CWE Name:  Permissions Privileges and Access Controls
Summary: the x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local hvm users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) hlt, (2) lgdt, (3) lidt, or (4) lmsw instruction.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: ADJACENT_NETWORK
Impact (C/I/A): PARTIAL/PARTIAL/PARTIAL
Published Date: 2014-10-02
Last Modified Date: 2018-10-30