CVE-2023-53208 KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Load L1's TSC multiplier based on L1 state, not L2 state When emulating nested VM-Exit, load L1's TSC multiplier if L1's desired ratio doesn't match the current ratio, not if the ratio L1 is using for L2 diverges from...

CVE-2021-47092 KVM: VMX: Always clear vmx->fail on emulation_required

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

CVE-2021-47092

Summary: CVE-2021-47092 relates to a Linux kernel KVM VMX issue where setting vmx->fail during emulation_required in L2 nesting was incorrect, potentially causing a VM-Exit/VM-Fail contradiction and a warning during teardown (nested_vmx_vmexit). The fix reverts that change so vmx->fail is n...