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CVE-2019-3887 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.6 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H

CNA: [email protected]CVSS-B:6.7 MEDIUMVector:CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2019:2703	CVE	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2741	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887	CVE	Issue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/	CVE
https://usn.ubuntu.com/3979-1/	CVE	Third Party Advisory
https://usn.ubuntu.com/3980-1/	CVE	Third Party Advisory
https://usn.ubuntu.com/3980-2/	CVE	Third Party Advisory
http://www.securityfocus.com/bid/107850	CVE	Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:2703	[email protected]	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2741	[email protected]	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887	[email protected]	Issue TrackingPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/	[email protected]
https://usn.ubuntu.com/3979-1/	[email protected]	Third Party Advisory
https://usn.ubuntu.com/3980-1/	[email protected]	Third Party Advisory
https://usn.ubuntu.com/3980-2/	[email protected]	Third Party Advisory
http://www.securityfocus.com/bid/107850	[email protected]	Third Party AdvisoryVDB Entry

see all 16 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	[email protected]
CWE-863	Incorrect Authorization	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 4.16
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.
fedoraproject fedora	29
CPE cpe:2.3:o:fedoraproject:fedora:29:::::::* Remediation No remediation found in references.
canonical ubuntu linux	18.04 18.10 19.04
CPE 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:::::::* Remediation No remediation found in references.
redhat enterprise linux	8.0
CPE cpe:2.3:o:redhat:enterprise_linux:8.0:::::::* Remediation No remediation found in references.
redhat enterprise linux eus	8.1 8.2 8.4
CPE 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:::::::* Remediation No remediation found in references.
redhat enterprise linux for real time	8
CPE cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:::::::* Remediation No remediation found in references.
redhat enterprise linux for real time for nfv	8
CPE cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:::::::* Remediation No remediation found in references.
redhat enterprise linux for real time for nfv tus	8.2 8.4
CPE cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.2:::::::* cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.4:::::::* Remediation No remediation found in references.
redhat enterprise linux for real time tus	8.2 8.4
CPE cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.2:::::::* cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.4:::::::* Remediation No remediation found in references.
redhat enterprise linux server aus	8.2 8.4
CPE cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:::::::* cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:::::::* Remediation No remediation found in references.
redhat enterprise linux server tus	8.2 8.4
CPE cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:::::::* cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:::::::* Remediation No remediation found in references.

Change History

16 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 12, 2023	CVE Modified	[email protected]
Feb 2, 2023	CVE Modified	[email protected]
Nov 7, 2022	Modified Analysis	[email protected]
Oct 7, 2022	CVE Modified	[email protected]
Nov 2, 2021	Modified Analysis	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Sep 11, 2019	CVE Modified	[email protected]
Sep 10, 2019	CVE Modified	[email protected]
May 21, 2019	CVE Modified	[email protected]
May 14, 2019	CVE Modified	[email protected]
Apr 15, 2019	CVE Modified	[email protected]
Apr 10, 2019	Initial Analysis	[email protected]
Apr 10, 2019	CVE Modified	[email protected]

CVE-2019-3887 Details

Description

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References to Advisories, Solutions, and Tools

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