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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernelUpgrade kernel-rt | Sep 11, 2019 | Apr 9, 2019 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 9, 2019 |
| Oracle_linux | — | Upgrade kernel | Jul 21, 2020 | Apr 5, 2019 |
| Redhat Openshift | — | Upgrade redhat-coreos | Dec 29, 2020 | Apr 9, 2019 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Sep 11, 2019 | Apr 9, 2019 |
| Ubuntu | — | Upgrade linux-image-4.18.0-20-snapdragonUpgrade linux-image-genericUpgrade linux-image-5.0.0-1008-raspi2Upgrade linux-image-4.18.0-20-genericUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-4.18.0-20-lowlatencyUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-snapdragonUpgrade linux-image-generic-lpaeUpgrade linux-image-awsUpgrade linux-image-powerpc64-smpUpgrade linux-image-5.0.0-1006-awsUpgrade linux-image-4.18.0-1016-awsUpgrade linux-image-5.0.0-15-lowlatencyUpgrade linux-image-azureUpgrade linux-image-5.0.0-1006-azureUpgrade linux-image-powerpc-e500mcUpgrade linux-image-gkeUpgrade linux-image-4.18.0-1018-azureUpgrade linux-image-lowlatencyUpgrade linux-image-raspi2Upgrade linux-image-virtualUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-5.0.0-15-genericUpgrade linux-image-powerpc-smpUpgrade linux-image-powerpc64-embUpgrade linux-image-5.0.0-1006-kvmUpgrade linux-image-4.18.0-1011-gcpUpgrade linux-image-4.18.0-1014-raspi2Upgrade linux-image-4.18.0-1012-kvmUpgrade linux-image-generic-lpae-hwe-18.04Upgrade linux-image-generic-hwe-18.04Upgrade linux-image-4.18.0-20-generic-lpaeUpgrade linux-image-5.0.0-15-generic-lpaeUpgrade linux-image-5.0.0-1006-gcpUpgrade linux-image-gcpUpgrade linux-image-kvm | May 15, 2019 | Apr 9, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 9, 2019 |
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