CVE-2019-3887
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-3887
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-3887.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2019-3887
- Downstream
- Related
- Published
- 2019-04-09T16:29:01Z
- Modified
- 2025-08-09T19:01:28Z
- Severity
-
- 5.6 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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
-
- http://www.securityfocus.com/bid/107850
- https://access.redhat.com/errata/RHSA-2019:2703
- https://access.redhat.com/errata/RHSA-2019:2741
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887
- https://usn.ubuntu.com/3979-1/
- https://usn.ubuntu.com/3980-1/
- https://usn.ubuntu.com/3980-2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE/