A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: redhat

Published: 2019-04-09T00:00:00

Updated: 2022-10-07T00:00:00

Reserved: 2019-01-03T00:00:00


Link: CVE-2019-3887

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2019-04-09T16:29:01.990

Modified: 2023-02-12T23:38:42.143


Link: CVE-2019-3887

JSON object: View

cve-icon Redhat Information

No data.

CWE