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.
References
Link | Resource |
---|---|
http://www.securityfocus.com/bid/107850 | Third Party Advisory VDB Entry |
https://access.redhat.com/errata/RHSA-2019:2703 | Third Party Advisory |
https://access.redhat.com/errata/RHSA-2019:2741 | Third Party Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887 | Issue Tracking Patch Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/ | |
https://usn.ubuntu.com/3979-1/ | Third Party Advisory |
https://usn.ubuntu.com/3980-1/ | Third Party Advisory |
https://usn.ubuntu.com/3980-2/ | Third Party Advisory |
History
No history.
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
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
Redhat Information
No data.
CWE