Tracker / CVE-2019-3887
CVE-2019-3887
Medium 5.6
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.
Affected products and versions
| canonical | ubuntu_linux |
|---|---|
| fedoraproject | fedora |
| linux | linux_kernel · 4.16 → … |
| redhat | enterprise_linux |
| redhat | enterprise_linux_eus |
| redhat | enterprise_linux_for_real_time |
| redhat | enterprise_linux_for_real_time_for_nfv |
| redhat | enterprise_linux_for_real_time_for_nfv_tus |
| redhat | enterprise_linux_for_real_time_tus |
| redhat | enterprise_linux_server_aus |
| redhat | enterprise_linux_server_tus |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.