The Linux kernel before 3.3.1, when KVM is used, allows guest OS users to cause a denial of service (host OS crash) by leveraging administrative access to the guest OS, related to the pmd_none_or_clear_bad function and page faults for huge pages.
Exploitability
AV:AAC:MAu:SImpact
C:NI:NA:C5.2/AV:A/AC:M/Au:S/C:N/I:N/A:C