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.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2014-10-02T14:00:00

Updated: 2016-12-30T16:57:01

Reserved: 2014-09-24T00:00:00


Link: CVE-2014-7155

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2014-10-02T14:55:05.120

Modified: 2018-10-30T16:27:34.687


Link: CVE-2014-7155

JSON object: View

cve-icon Redhat Information

No data.

CWE