Detections
Analytics
CVE-2019-3887
medium
Description
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
https://usn.ubuntu.com/3980-2/
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3979-1/
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887
https://access.redhat.com/errata/RHSA-2019:2741
https://access.redhat.com/errata/RHSA-2019:2703
http://www.securityfocus.com/bid/107850