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kernel: KVM: nVMX: missing consistency checks for CR0 and CR4

🗓️ 14 Nov 2023 15:24:26Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 14 Views

KVM Intel nVMX flaw: CR0/CR4 differ from VMCS12, risking host crash when nested=1 and ept=0.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.9x86_64kernel-rt4.18.0-513.5.1.rt7.307.el8_9kernel-rt-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-core4.18.0-513.5.1.rt7.307.el8_9kernel-rt-core-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-core4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-core-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-debuginfo4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-debuginfo-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-devel4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-devel-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-kvm4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-kvm-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-modules4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-modules-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debug-modules-extra4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debug-modules-extra-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
Red Hat Enterprise Linux8.9x86_64kernel-rt-debuginfo4.18.0-513.5.1.rt7.307.el8_9kernel-rt-debuginfo-4.18.0-513.5.1.rt7.307.el8_9.x86_64.rpm
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28 Jun 2026 12:41Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.16.5
EPSS0.00474
SSVC
14