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.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| linux | linux_kernel | 4.16 | - |
| fedoraproject | fedora | - | - |
| canonical | ubuntu_linux | - |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
19
Affected Products
16
References
linux / linux_kernel
| - |
| canonical | ubuntu_linux | - | - |
| canonical | ubuntu_linux | - | - |
| redhat | enterprise_linux | - | - |
| redhat | enterprise_linux_eus | - | - |
| redhat | enterprise_linux_eus | - | - |
| 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_for_nfv_tus | - | - |
| redhat | enterprise_linux_for_real_time_tus | - | - |
| redhat | enterprise_linux_for_real_time_tus | - | - |
| redhat | enterprise_linux_server_aus | - | - |
| redhat | enterprise_linux_server_aus | - | - |
| redhat | enterprise_linux_server_tus | - | - |
| redhat | enterprise_linux_server_tus | - | - |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Exploitability
Impact