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MitreCVELIST:CVE-2021-29657HistoryJul 22, 2021 - 4:44 p.m.
CVE-2021-29657
2021-07-2216:44:33
mitre
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arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nested_svm_vmrun.
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