diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 8d36f0c7307187f63653f6d7f3228426ba9be622..3dc3e2897804e8d2fbef1ac125934380da90e5ee 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1309,8 +1309,9 @@ static int sev_send_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp)
 	}
 
 	/* Copy packet header to userspace. */
-	ret = copy_to_user((void __user *)(uintptr_t)params.hdr_uaddr, hdr,
-				params.hdr_len);
+	if (copy_to_user((void __user *)(uintptr_t)params.hdr_uaddr, hdr,
+			 params.hdr_len))
+		ret = -EFAULT;
 
 e_free_trans_data:
 	kfree(trans_data);