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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Register (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.
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.
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.
A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Register (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.
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/ [Mailing List, Third Party Advisory]
Modified Analysis by NIST11/07/2022 2:27:00 PM
Action
Type
Old Value
New Value
CVE Modified by Red Hat, Inc.10/07/2022 10:15:40 AM
Action
Type
Old Value
New Value
Added
CWE
Red Hat, Inc. CWE-863
Removed
CWE
Red Hat, Inc. CWE-284
Removed
CWE Reason
CWE-284 / More specific CWE option available
Modified Analysis by NIST11/02/2021 4:18:55 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
OR
*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.2:*:*:*:*:*:*:*
*cpe:2.3:o:redha
Removed
CVSS V3
NIST AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Added
CVSS V3.1
NIST AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Added
CWE
NIST CWE-863
Removed
CWE
NIST CWE-20
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2019:2703 No Types Assigned
https://access.redhat.com/errata/RHSA-2019:2703 Third Party Advisory
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2019:2741 No Types Assigned
https://access.redhat.com/errata/RHSA-2019:2741 Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/ Mailing List, Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3979-1/ No Types Assigned
https://usn.ubuntu.com/3979-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3980-1/ No Types Assigned
https://usn.ubuntu.com/3980-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3980-2/ No Types Assigned
https://usn.ubuntu.com/3980-2/ Third Party Advisory
CVE Modified by Red Hat, Inc.10/09/2019 7:49:52 PM
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