KVM: x86: Fix the NULL pointer parameter in check_cr_write()
Routine check_cr_write() will trigger emulator_get_cpuid()-> kvm_cpuid() to get maxphyaddr, and NULL is passed as values for ebx/ecx/edx. This is problematic because kvm_cpuid() will dereference these pointers. Fixes: d1cd3ce9 ("KVM: MMU: check guest CR3 reserved bits based on its physical address width.") Reported-by:Jim Mattson <jmattson@google.com> Signed-off-by:
Yu Zhang <yu.c.zhang@linux.intel.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Reviewed-by:
Jim Mattson <jmattson@google.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
parent
95e2a3b3
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