fix(sdmmc): Validate DMA buffer address range

Closes https://github.com/espressif/esp-idf/issues/18714

components/esp_driver_sdmmc/include/esp_private/sd_host_buffer.h

@@ -0,0 +1,22 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct sd_host_sdmmc_slot_t sd_host_sdmmc_slot_t;
+
+bool sd_host_check_buffer_alignment(sd_host_sdmmc_slot_t *slot, const void *buf, size_t size);
+
+#ifdef __cplusplus
+}
+#endif

components/esp_driver_sdmmc/include/esp_private/sd_host_private.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2025-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -14,6 +14,7 @@
 #include "esp_check.h"
 #include "esp_pm.h"
 #include "esp_cache.h"
+#include "esp_private/sd_host_buffer.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/semphr.h"
 #include "driver/sd_host_sdmmc.h"
@@ -95,7 +96,6 @@ typedef struct {
     size_t desc_remaining;
 } sd_host_sdmmc_trans_state_t;
 
-typedef struct sd_host_sdmmc_slot_t sd_host_sdmmc_slot_t;
 typedef struct sd_host_sdmmc_ctlr_t sd_host_sdmmc_ctlr_t;
 
 /**
@@ -333,19 +333,6 @@ void sd_host_dma_prepare(sd_host_sdmmc_slot_t *slot, void* data_ptr, size_t data
 /*---------------------------------------------------------------
                         Info APIs
 ---------------------------------------------------------------*/
-/**
- * @brief Check SD buffer alignment
- *
- * @param[in] slot        SD Host slot handle
- * @param[in] buf         Buffer pointer
- * @param[in] size        Buffer size
- *
- * @return
- *        - True: alignment requirement is satisfied
- *        - False: alignment requirement is not satisfied
- */
-bool sd_host_check_buffer_alignment(sd_host_sdmmc_slot_t *slot, const void *buf, size_t size);
-
 /**
  * @brief Get SD Host slot real frequency
  *