diff --git a/drivers/flash/flash_stm32.c b/drivers/flash/flash_stm32.c
index f6daea97fe3..cba4a76a969 100644
--- a/drivers/flash/flash_stm32.c
+++ b/drivers/flash/flash_stm32.c
@@ -45,6 +45,15 @@ static const struct flash_parameters flash_stm32_parameters = {
 
 static int flash_stm32_write_protection(const struct device *dev, bool enable);
 
+bool __weak flash_stm32_valid_range(const struct device *dev, off_t offset,
+				    uint32_t len, bool write)
+{
+	if (write && !flash_stm32_valid_write(offset, len)) {
+		return false;
+	}
+	return flash_stm32_range_exists(dev, offset, len);
+}
+
 int __weak flash_stm32_check_configuration(void)
 {
 	return 0;
diff --git a/drivers/flash/flash_stm32f1x.c b/drivers/flash/flash_stm32f1x.c
index 71d5ffbeece..0c54d3f69fe 100644
--- a/drivers/flash/flash_stm32f1x.c
+++ b/drivers/flash/flash_stm32f1x.c
@@ -163,17 +163,6 @@ static int write_value(const struct device *dev, off_t offset,
 	return rc;
 }
 
-/* offset and len must be aligned on 2 for write
- * positive and not beyond end of flash
- */
-bool flash_stm32_valid_range(const struct device *dev, off_t offset,
-			     uint32_t len,
-			     bool write)
-{
-	return (!write || (offset % 2 == 0 && len % 2 == 0U)) &&
-		flash_stm32_range_exists(dev, offset, len);
-}
-
 int flash_stm32_block_erase_loop(const struct device *dev,
 				 unsigned int offset,
 				 unsigned int len)
diff --git a/drivers/flash/flash_stm32g0x.c b/drivers/flash/flash_stm32g0x.c
index a3be761f391..07eea9ce32b 100644
--- a/drivers/flash/flash_stm32g0x.c
+++ b/drivers/flash/flash_stm32g0x.c
@@ -40,20 +40,6 @@ LOG_MODULE_REGISTER(LOG_DOMAIN);
 #define STM32G0_PAGES_PER_BANK		\
 	((STM32G0_FLASH_SIZE / STM32G0_FLASH_PAGE_SIZE) / STM32G0_BANK_COUNT)
 
-/*
- * offset and len must be aligned on 8 for write,
- * positive and not beyond end of flash
- * On dual-bank SoCs memory accesses starting on the first bank and continuing
- * beyond the first bank into the second bank are allowed.
- */
-bool flash_stm32_valid_range(const struct device *dev, off_t offset,
-			     uint32_t len,
-			     bool write)
-{
-	return (!write || (offset % 8 == 0 && len % 8 == 0)) &&
-		flash_stm32_range_exists(dev, offset, len);
-}
-
 static inline void flush_cache(FLASH_TypeDef *regs)
 {
 	if (regs->ACR & FLASH_ACR_ICEN) {
diff --git a/drivers/flash/flash_stm32g4x.c b/drivers/flash/flash_stm32g4x.c
index af253584064..e1f012c254b 100644
--- a/drivers/flash/flash_stm32g4x.c
+++ b/drivers/flash/flash_stm32g4x.c
@@ -42,8 +42,10 @@ bool flash_stm32_valid_range(const struct device *dev, off_t offset,
 	}
 #endif
 
-	return (!write || (offset % 8 == 0 && len % 8 == 0U)) &&
-		flash_stm32_range_exists(dev, offset, len);
+	if (write && !flash_stm32_valid_write(offset, len)) {
+		return false;
+	}
+	return flash_stm32_range_exists(dev, offset, len);
 }
 
 static inline void flush_cache(FLASH_TypeDef *regs)
diff --git a/drivers/flash/flash_stm32l4x.c b/drivers/flash/flash_stm32l4x.c
index 56fe85e1fad..24644aba95e 100644
--- a/drivers/flash/flash_stm32l4x.c
+++ b/drivers/flash/flash_stm32l4x.c
@@ -32,16 +32,6 @@ LOG_MODULE_REGISTER(LOG_DOMAIN);
 #define CONTROL_DCACHE
 #endif
 
-/* offset and len must be aligned on 8 for write
- * , positive and not beyond end of flash */
-bool flash_stm32_valid_range(const struct device *dev, off_t offset,
-			     uint32_t len,
-			     bool write)
-{
-	return (!write || (offset % 8 == 0 && len % 8 == 0U)) &&
-		flash_stm32_range_exists(dev, offset, len);
-}
-
 static inline void flush_cache(FLASH_TypeDef *regs)
 {
 	if (regs->ACR & FLASH_ACR_DCEN) {
diff --git a/drivers/flash/flash_stm32wbax.c b/drivers/flash/flash_stm32wbax.c
index 605b727ddfb..0796b9a5be4 100644
--- a/drivers/flash/flash_stm32wbax.c
+++ b/drivers/flash/flash_stm32wbax.c
@@ -105,18 +105,6 @@ static int icache_wait_for_invalidate_complete(void)
 	return status;
 }
 
-/*
- * offset and len must be aligned on 16 for write,
- * positive and not beyond end of flash
- */
-bool flash_stm32_valid_range(const struct device *dev, off_t offset,
-			     uint32_t len,
-			     bool write)
-{
-	return (!write || (offset % 16 == 0 && len % 16 == 0U)) &&
-		flash_stm32_range_exists(dev, offset, len);
-}
-
 static int write_qword(const struct device *dev, off_t offset, const uint32_t *buff)
 {
 	FLASH_TypeDef *regs = FLASH_STM32_REGS(dev);
diff --git a/drivers/flash/flash_stm32wbx.c b/drivers/flash/flash_stm32wbx.c
index 90746d10b17..e72fddf756f 100644
--- a/drivers/flash/flash_stm32wbx.c
+++ b/drivers/flash/flash_stm32wbx.c
@@ -26,17 +26,6 @@ LOG_MODULE_REGISTER(LOG_DOMAIN);
 
 #define STM32WBX_PAGE_SHIFT	12
 
-/* offset and len must be aligned on 8 for write,
- * positive and not beyond end of flash
- */
-bool flash_stm32_valid_range(const struct device *dev, off_t offset,
-			     uint32_t len,
-			     bool write)
-{
-	return (!write || (offset % 8 == 0 && len % 8 == 0U)) &&
-	       flash_stm32_range_exists(dev, offset, len);
-}
-
 /*
  * Up to 255 4K pages
  */