diff --git a/stm32cube/stm32h5xx/README b/stm32cube/stm32h5xx/README
index cfdf6a9a2..83f3c30e1 100644
--- a/stm32cube/stm32h5xx/README
+++ b/stm32cube/stm32h5xx/README
@@ -67,4 +67,11 @@ Patch List:
      Impacted files:
       stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c
 
+   *Fix SDIO polling mode data transfer issues
+     Fixes two related issues in the STM32H5 SDIO driver: incorrect block count calculation 
+     that caused the card to hang, and improper buffer size handling that led to misaligned FIFO writes. 
+     Together, these changes ensure correct and stable data transfer in polling mode.
+     Impacted file: 
+      stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c   
+
    See release_note.html from STM32Cube
diff --git a/stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c b/stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c
index 782099845..20215fd9b 100644
--- a/stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c
+++ b/stm32cube/stm32h5xx/drivers/src/stm32h5xx_hal_sdio.c
@@ -1022,7 +1022,7 @@ HAL_StatusTypeDef HAL_SDIO_ReadExtended(SDIO_HandleTypeDef *hsdio, const HAL_SDI
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
@@ -1167,7 +1167,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, const HAL_SD
   uint8_t byteCount;
   uint32_t data;
   uint32_t dataremaining;
-  uint8_t *u32tempbuff = pData;
+  uint32_t *u32tempbuff = (uint32_t *) pData;
   uint32_t nbr_of_block;
 
   /* Check the parameters */
@@ -1227,7 +1227,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, const HAL_SD
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
diff --git a/stm32cube/stm32h7rsxx/README b/stm32cube/stm32h7rsxx/README
index 2ba0203a1..10ef2a543 100644
--- a/stm32cube/stm32h7rsxx/README
+++ b/stm32cube/stm32h7rsxx/README
@@ -53,5 +53,12 @@ Patch List:
      the card identification sequence is skipped.
      Impacted files:
       stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c
+    
+   *Fix SDIO polling mode data transfer issues
+     Fixes two related issues in the STM32H7RS SDIO driver: incorrect block count calculation 
+     that caused the card to hang, and improper buffer size handling that led to misaligned FIFO writes. 
+     Together, these changes ensure correct and stable data transfer in polling mode.
+     Impacted file: 
+      stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c    
 
    See release_note.html from STM32Cube
diff --git a/stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c b/stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c
index 3c4f22b13..d950c8c62 100644
--- a/stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c
+++ b/stm32cube/stm32h7rsxx/drivers/src/stm32h7rsxx_hal_sdio.c
@@ -1011,7 +1011,7 @@ HAL_StatusTypeDef HAL_SDIO_ReadExtended(SDIO_HandleTypeDef *hsdio, const HAL_SDI
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
@@ -1156,7 +1156,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, const HAL_SD
   uint8_t byteCount;
   uint32_t data;
   uint32_t dataremaining;
-  uint8_t *u32tempbuff = pData;
+  uint32_t *u32tempbuff = (uint32_t *) pData;
   uint32_t nbr_of_block;
 
   /* Check the parameters */
@@ -1216,7 +1216,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, const HAL_SD
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
diff --git a/stm32cube/stm32h7xx/README b/stm32cube/stm32h7xx/README
index 040848ab5..65f4258f9 100644
--- a/stm32cube/stm32h7xx/README
+++ b/stm32cube/stm32h7xx/README
@@ -68,4 +68,11 @@ Patch List:
      Impacted files:
       stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c
 
+   *Fix SDIO polling mode data transfer issues
+     Fixes two related issues in the STM32H7 SDIO driver: incorrect block count calculation 
+     that caused the card to hang, and improper buffer size handling that led to misaligned FIFO writes. 
+     Together, these changes ensure correct and stable data transfer in polling mode.
+     Impacted file: 
+      stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c
+         
    See release_note.html from STM32Cube
diff --git a/stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c b/stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c
index 9deaf4c46..622ab8860 100644
--- a/stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c
+++ b/stm32cube/stm32h7xx/drivers/src/stm32h7xx_hal_sdio.c
@@ -1002,7 +1002,7 @@ HAL_StatusTypeDef HAL_SDIO_ReadExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Exte
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
@@ -1147,7 +1147,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
   uint8_t byteCount;
   uint32_t data;
   uint32_t dataremaining;
-  uint8_t *u32tempbuff = pData;
+  uint32_t *u32tempbuff = (uint32_t *) pData;
   uint32_t nbr_of_block;
 
   /* Check the parameters */
@@ -1207,7 +1207,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
diff --git a/stm32cube/stm32n6xx/README b/stm32cube/stm32n6xx/README
index 485ffc3e5..e8906c410 100644
--- a/stm32cube/stm32n6xx/README
+++ b/stm32cube/stm32n6xx/README
@@ -55,7 +55,7 @@ Patch List:
     -soc/system_stm32n6xx_s.c
 
    *Fix SDIO initialization failure when skipping card identification sequence
-     Fixes an issue in the STM32HN6 SDIO driver where HAL_SDIO_Init() fails if
+     Fixes an issue in the STM32N6 SDIO driver where HAL_SDIO_Init() fails if
      the card identification sequence is skipped.
      Impacted files:
       stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c
@@ -67,4 +67,9 @@ Patch List:
       stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_xspi.c
     Internal reference: 212765
 
-   See release_note.html from STM32Cube
+   *Fix SDIO polling mode data transfer issues
+     Fixes two related issues in the STM32N6 SDIO driver: incorrect block count calculation 
+     that caused the card to hang, and improper buffer size handling that led to misaligned FIFO writes. 
+     Together, these changes ensure correct and stable data transfer in polling mode.
+     Impacted file: 
+      stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c   
diff --git a/stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c b/stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c
index a48940503..599c5470c 100644
--- a/stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c
+++ b/stm32cube/stm32n6xx/drivers/src/stm32n6xx_hal_sdio.c
@@ -1002,7 +1002,7 @@ HAL_StatusTypeDef HAL_SDIO_ReadExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Exte
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
@@ -1147,7 +1147,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
   uint8_t byteCount;
   uint32_t data;
   uint32_t dataremaining;
-  uint8_t *u32tempbuff = pData;
+  uint32_t *u32tempbuff = (uint32_t *) pData;
   uint32_t nbr_of_block;
 
   /* Check the parameters */
@@ -1207,7 +1207,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
diff --git a/stm32cube/stm32u5xx/README b/stm32cube/stm32u5xx/README
index 863404ffd..e942206df 100644
--- a/stm32cube/stm32u5xx/README
+++ b/stm32cube/stm32u5xx/README
@@ -54,4 +54,11 @@ Patch List:
      Impacted files:
       stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c
 
+   *Fix SDIO polling mode data transfer issues
+     Fixes two related issues in the STM32U5 SDIO driver: incorrect block count calculation 
+     that caused the card to hang, and improper buffer size handling that led to misaligned FIFO writes. 
+     Together, these changes ensure correct and stable data transfer in polling mode.
+     Impacted file: 
+      stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c   
+
    See release_note.html from STM32Cube
diff --git a/stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c b/stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c
index a87a5c2a2..a735b288a 100644
--- a/stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c
+++ b/stm32cube/stm32u5xx/drivers/src/stm32u5xx_hal_sdio.c
@@ -1002,7 +1002,7 @@ HAL_StatusTypeDef HAL_SDIO_ReadExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Exte
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {
@@ -1147,7 +1147,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
   uint8_t byteCount;
   uint32_t data;
   uint32_t dataremaining;
-  uint8_t *u32tempbuff = pData;
+  uint32_t *u32tempbuff = (uint32_t *) pData;
   uint32_t nbr_of_block;
 
   /* Check the parameters */
@@ -1207,7 +1207,7 @@ HAL_StatusTypeDef HAL_SDIO_WriteExtended(SDIO_HandleTypeDef *hsdio, HAL_SDIO_Ext
     cmd |= Argument->Block_Mode << 27U;
     cmd |= Argument->OpCode << 26U;
     cmd |= (Argument->Reg_Addr & 0x1FFFFU) << 9U;
-    cmd |= (Size_byte & 0x1FFU);
+    cmd |= ((nbr_of_block == 0U)? Size_byte : nbr_of_block)& 0x1FFU;
     errorstate = SDMMC_SDIO_CmdReadWriteExtended(hsdio->Instance, cmd);
     if (errorstate != HAL_SDIO_ERROR_NONE)
     {