diff --git a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_DYNAMIC/main.c b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_DYNAMIC/main.c
index 62b5f7ca8..e8d60cb61 100644
--- a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_DYNAMIC/main.c
+++ b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_DYNAMIC/main.c
@@ -23,10 +23,10 @@
 #include "oslib_test_root.h"
 
 /* Static memory areas used by sandboxes.*/
-extern uint32_t __flash1_base__, __flash1_end__,
-                __flash2_base__, __flash2_end__,
-                __ram1_base__,   __ram1_end__,
-                __ram2_base__,   __ram2_end__;
+extern uint8_t __flash1_base__, __flash1_size__,
+               __flash2_base__, __flash2_size__,
+               __ram1_base__,   __ram1_size__,
+               __ram2_base__,   __ram2_size__;
 
 /* Sandbox 1 configuration.*/
 static const sb_config_t sb_config1 = {
@@ -34,10 +34,10 @@ static const sb_config_t sb_config1 = {
   .data_region    = 1U,
   .regions        = {
     [0] = {
-      (uint32_t)&__flash1_base__,   (uint32_t)&__flash1_end__,  false
+      {(uint8_t *)&__flash1_base__, (size_t)&__flash1_size__},  false
     },
     [1] = {
-       (uint32_t)&__ram1_base__,    (uint32_t)&__ram1_end__,    true
+      {(uint8_t *)&__ram1_base__,   (size_t)&__ram1_size__},    true
     }
   },
   .mpuregs        = {
@@ -65,10 +65,10 @@ static const sb_config_t sb_config2 = {
   .data_region    = 1U,
   .regions        = {
     [0] = {
-      (uint32_t)&__flash2_base__,   (uint32_t)&__flash2_end__,  false
+      {(uint8_t *)&__flash2_base__,  (size_t)&__flash2_size__},  false
     },
     [1] = {
-      (uint32_t)&__ram2_base__,     (uint32_t)&__ram2_end__,    true
+      {(uint8_t *)&__ram2_base__,    (size_t)&__ram2_size__},    true
     }
   },
   .mpuregs        = {
diff --git a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
index f5d67fbb1..eb4258cc2 100644
--- a/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
+++ b/demos/STM32/RT-STM32G474RE-NUCLEO64-SB_HOST_STATIC/main.c
@@ -23,10 +23,10 @@
 #include "oslib_test_root.h"
 
 /* Static memory areas used by sandboxes.*/
-extern uint32_t __flash1_base__, __flash1_end__,
-                __flash2_base__, __flash2_end__,
-                __ram1_base__,   __ram1_end__,
-                __ram2_base__,   __ram2_end__;
+extern uint8_t __flash1_base__, __flash1_size__,
+               __flash2_base__, __flash2_size__,
+               __ram1_base__,   __ram1_size__,
+               __ram2_base__,   __ram2_size__;
 
 /* Sandbox 1 configuration.*/
 static const sb_config_t sb_config1 = {
@@ -34,10 +34,10 @@ static const sb_config_t sb_config1 = {
   .data_region    = 1U,
   .regions        = {
     [0] = {
-      (uint32_t)&__flash1_base__,   (uint32_t)&__flash1_end__,  false
+      {(uint8_t *)&__flash1_base__, (size_t)&__flash1_size__},  false
     },
     [1] = {
-       (uint32_t)&__ram1_base__,    (uint32_t)&__ram1_end__,    true
+      {(uint8_t *)&__ram1_base__,   (size_t)&__ram1_size__},    true
     }
   },
   .stdin_stream   = (SandboxStream *)&LPSD1,
@@ -51,10 +51,10 @@ static const sb_config_t sb_config2 = {
   .data_region    = 1U,
   .regions        = {
     [0] = {
-      (uint32_t)&__flash2_base__,   (uint32_t)&__flash2_end__,  false
+      {(uint8_t *)&__flash2_base__,  (size_t)&__flash2_size__},  false
     },
     [1] = {
-      (uint32_t)&__ram2_base__,     (uint32_t)&__ram2_end__,    true
+      {(uint8_t *)&__ram2_base__,    (size_t)&__ram2_size__},    true
     }
   },
   .stdin_stream   = (SandboxStream *)&LPSD1,
diff --git a/os/sb/host/sb.h b/os/sb/host/sb.h
index df8b82c3c..d6d3412c5 100644
--- a/os/sb/host/sb.h
+++ b/os/sb/host/sb.h
@@ -49,7 +49,7 @@
 /**
  * @brief   Safety Extensions version string.
  */
-#define CH_SB_VERSION           "2.0.0"
+#define CH_SB_VERSION           "2.1.0"
 
 /**
  * @brief   Safety Extensions version major number.
@@ -59,7 +59,7 @@
 /**
  * @brief   Safety Extensions version minor number.
  */
-#define CH_SB_MINOR             0
+#define CH_SB_MINOR             1
 
 /**
  * @brief   Safety Extensions version patch number.
@@ -109,6 +109,10 @@
 #error "SandBox requires CH_CFG_INTERVALS_SIZE == 32"
 #endif
 
+#if CH_CFG_USE_MEMCHECKS == FALSE
+#error "SandBox requires CH_CFG_USE_MEMCHECKS == TRUE"
+#endif
+
 #if PORT_USE_SYSCALL == FALSE
 #error "SandBox requires PORT_USE_SYSCALL == TRUE"
 #endif
diff --git a/os/sb/host/sbhost.c b/os/sb/host/sbhost.c
index 6bd8d61ea..d861f61a2 100644
--- a/os/sb/host/sbhost.c
+++ b/os/sb/host/sbhost.c
@@ -61,8 +61,7 @@ bool sb_is_valid_read_range(sb_class_t *sbcp, const void *start, size_t size) {
   const sb_memory_region_t *rp = &sbcp->config->regions[0];
 
   do {
-    if (((uint32_t)start >= rp->base) && ((uint32_t)start < rp->end) &&
-        (size <= ((size_t)rp->base - (size_t)start))) {
+    if (chMemIsAreaContainedX(&rp->area, start, size)) {
       return true;
     }
     rp++;
@@ -75,8 +74,7 @@ bool sb_is_valid_write_range(sb_class_t *sbcp, void *start, size_t size) {
   const sb_memory_region_t *rp = &sbcp->config->regions[0];
 
   do {
-    if (((uint32_t)start >= rp->base) && ((uint32_t)start < rp->end) &&
-        (size <= ((size_t)rp->base - (size_t)start))) {
+    if (chMemIsAreaContainedX(&rp->area, start, size)) {
       return rp->writeable;
     }
     rp++;
@@ -119,7 +117,7 @@ thread_t *sbStartThread(sb_class_t *sbcp, const sb_config_t *config,
   const sb_header_t *sbhp;
 
   /* Header location.*/
-  sbhp = (const sb_header_t *)config->regions[config->code_region].base;
+  sbhp = (const sb_header_t *)(void *)config->regions[config->code_region].area.base;
 
   /* Checking header magic numbers.*/
   if ((sbhp->hdr_magic1 != SB_MAGIC1) || (sbhp->hdr_magic2 != SB_MAGIC2)) {
@@ -139,9 +137,10 @@ thread_t *sbStartThread(sb_class_t *sbcp, const sb_config_t *config,
     .wbase      = (stkalign_t *)wsp,
     .wend       = (stkalign_t *)wsp + (size / sizeof (stkalign_t)),
     .prio       = prio,
-    .u_pc       = (config->regions[config->code_region].base +
-                   sizeof (sb_header_t)) | 1U,
-    .u_psp      = config->regions[config->data_region].end,
+    .u_pc       = (uint32_t)(config->regions[config->code_region].area.base +
+                             sizeof (sb_header_t)) | 1U,
+    .u_psp      = (uint32_t)(config->regions[config->data_region].area.base +
+                             config->regions[config->data_region].area.size),
     .arg        = (void *)sbcp
   };
 #if PORT_SWITCHED_REGIONS_NUMBER > 0
diff --git a/os/sb/host/sbhost.h b/os/sb/host/sbhost.h
index 59fae8109..3e33e3483 100644
--- a/os/sb/host/sbhost.h
+++ b/os/sb/host/sbhost.h
@@ -72,15 +72,9 @@ typedef struct {
  */
 typedef struct {
   /**
-   * @brief   Memory range base.
-   * @note    Zero if not used.
+   * @brief   Associated memory area.
    */
-  uint32_t                      base;
-  /**
-   * @brief   Memory range end (non inclusive).
-   * @note    Zero if not used.
-   */
-  uint32_t                      end;
+  memory_region_t               area;
   /**
    * @brief   Writable memory range.
    */