vulnerability
Red Hat OpenShift: CVE-2019-3887: Kernel: KVM: nVMX: guest accesses L0 MSR causes potential DoS
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:N/I:N/A:C) | Apr 9, 2019 | Dec 29, 2020 | Apr 11, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
Apr 9, 2019
Added
Dec 29, 2020
Modified
Apr 11, 2025
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.
Solution
linuxrpm-upgrade-redhat-coreos
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