The pit_ioport_read function in the Programmable Interval Timer (PIT)
emulation in i8254.c in KVM 83 does not properly use the pit_state
data structure, which allows guest OS users to cause a denial of
service (host OS crash or hang) by attempting to read the /dev/port
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[kvm] 20100129 KVM: PIT: control word is write-only
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