Andy Honig a2c118bfab KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) ... If the guest specifies a IOAPIC_REG_SELECT with an invalid value and follows that with a read of the IOAPIC_REG_WINDOW KVM does not properly validate that request. ioapic_read_indirect contains an ASSERT(redir_index < IOAPIC_NUM_PINS), but the ASSERT has no effect in non-debug builds. In recent kernels this allows a guest to cause a kernel oops by reading invalid memory. In older kernels (pre-3.3) this allows a guest to read from large ranges of host memory. Tested: tested against apic unit tests. Signed-off-by: Andrew Honig <ahonig@google.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>		2013-03-19 14:20:21 -03:00
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kvm	KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798)	2013-03-19 14:20:21 -03:00