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Use safer copy input buffer function on set user memory region #102

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Use safer copy input buffer function on set user memory region #102

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3 changes: 2 additions & 1 deletion virt/kvm/kvm_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2080,7 +2080,8 @@ NTSTATUS kvm_vm_ioctl(PDEVICE_OBJECT pDevObj, PIRP pIrp,
struct kvm_userspace_memory_region kvm_userspace_mem;

r = -EFAULT;
RtlCopyBytes(&kvm_userspace_mem, pIrp->AssociatedIrp.SystemBuffer, sizeof(kvm_userspace_mem));
if (aehdCopyInputBuffer(pIrp, 0, &kvm_userspace_mem, sizeof(kvm_userspace_mem)))
goto out;
r = kvm_vm_ioctl_set_memory_region(kvm, &kvm_userspace_mem);
break;
}
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