diff --git a/os/hal/ports/STM32/STM32F4xx/stm32_isr.h b/os/hal/ports/STM32/STM32F4xx/stm32_isr.h
index 90b867d7a..028aa95dd 100644
--- a/os/hal/ports/STM32/STM32F4xx/stm32_isr.h
+++ b/os/hal/ports/STM32/STM32F4xx/stm32_isr.h
@@ -75,6 +75,10 @@
 #define STM32_CAN2_RX0_HANDLER              Vector140
 #define STM32_CAN2_RX1_HANDLER              Vector144
 #define STM32_CAN2_SCE_HANDLER              Vector148
+#define STM32_CAN3_TX_HANDLER               Vector168
+#define STM32_CAN3_RX0_HANDLER              Vector16C
+#define STM32_CAN3_RX1_HANDLER              Vector170
+#define STM32_CAN3_SCE_HANDLER              Vector174
 
 #define STM32_CAN1_TX_NUMBER                19
 #define STM32_CAN1_RX0_NUMBER               20
@@ -84,6 +88,10 @@
 #define STM32_CAN2_RX0_NUMBER               64
 #define STM32_CAN2_RX1_NUMBER               65
 #define STM32_CAN2_SCE_NUMBER               66
+#define STM32_CAN3_TX_NUMBER                74
+#define STM32_CAN3_RX0_NUMBER               75
+#define STM32_CAN3_RX1_NUMBER               76
+#define STM32_CAN3_SCE_NUMBER               77
 
 /*
  * EXTI unit.
diff --git a/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h b/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h
index 3f7488daf..20ece9d4e 100644
--- a/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h
+++ b/os/hal/ports/STM32/STM32F4xx/stm32_rcc.h
@@ -510,6 +510,29 @@
  * @api
  */
 #define rccResetCAN2() rccResetAPB1(RCC_APB1RSTR_CAN2RST)
+
+/**
+ * @brief   Resets the CAN3 peripheral.
+ *
+ * @api
+ */
+#define rccResetCAN3() rccResetAPB1(RCC_APB1RSTR_CAN3RST)
+
+/**
+ * @brief   Enables the CAN3 peripheral clock.
+ *
+ * @param[in] lp        low power enable flag
+ *
+ * @api
+ */
+#define rccEnableCAN3(lp) rccEnableAPB1(RCC_APB1ENR_CAN3EN, lp)
+
+/**
+ * @brief   Disables the CAN3 peripheral clock.
+ *
+ * @api
+ */
+#define rccDisableCAN3() rccDisableAPB1(RCC_APB1ENR_CAN3EN)
 /** @} */
 
 /**
diff --git a/os/hal/ports/STM32/STM32F4xx/stm32_registry.h b/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
index 75b2661c3..5b1dbcf20 100644
--- a/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
+++ b/os/hal/ports/STM32/STM32F4xx/stm32_registry.h
@@ -1268,6 +1268,7 @@
 #define STM32_HAS_CAN2                      TRUE
 #define STM32_HAS_CAN3                      TRUE
 #define STM32_CAN_MAX_FILTERS               28
+#define STM32_CAN3_MAX_FILTERS              14
 
 /* DAC attributes.*/
 #define STM32_HAS_DAC1_CH1                  TRUE
diff --git a/readme.txt b/readme.txt
index 8f56aed4f..d171d8ea6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -124,6 +124,7 @@
 - NEW: Increased stacks size in RT test suite from 128 to 192. added an
        option to override the stack size by defining THREADS_STACK_SIZE
        in the makefile.
+- FIX: CAN support broken on STM32F413 (bug #1232)(***********TODO*********** backported to 21.11.3).
 - FIX: Re-opened and fixed bug #1100
        (backported to 20.3.5)(backported to 21.11.2).
 - FIX: Fixed wrong buffers toggling in STM32 USBv1 isochronous mode (bug #1232)