Validate CAN frame DLC before processing

2026-07-29 23:51:22 +02:00
parent 8b8c97316b
commit 2b445aac84
1 changed files with 3 additions and 0 deletions
@@ -76,8 +76,11 @@ void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
    // TODO: manage the case of FIFO overflow
    if (HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &rxHeader, data) != HAL_OK) return;

+    if (rxHeader.DLC > 8) return;
+
    if (rxHeader.IDE == CAN_ID_EXT) message.id = rxHeader.ExtId;
    else message.id = rxHeader.StdId;
+
    message.dlc = rxHeader.DLC;
    message.isExtended = (rxHeader.IDE == CAN_ID_EXT);
    message.source = (hcan->Instance == CAN1) ? 1 : 2;