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CVE-2021-29657

CVE-kwetsbaarheidsdetails - eXtreme Datacenter Security Operations

Gepubliceerd 2021-07-22 16:44:33

Laatst bijgewerkt 2024-08-03 22:11:06

Toegewezen door mitre

CVSS-score geen score

Status PUBLISHED

Beschrijving

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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