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fix: validate follow-up block size in SDO block download

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MrAlaskan 2026-07-20 22:14:28 +08:00
parent 9b8beed836
commit f225362aa3
1 changed files with 5 additions and 0 deletions
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5
301/CO_SDOclient.c
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@ -703,6 +703,11 @@ CO_SDOclientDownload(CO_SDOclient_t* SDO_C, uint32_t timeDifference_us, bool_t s
SDO_C->state = CO_SDO_ST_DOWNLOAD_BLK_END_REQ;
} else {
SDO_C->block_blksize = SDO_C->CANrxData[2];
if ((SDO_C->block_blksize < 1U) || (SDO_C->block_blksize > 127U)) {
abortCode = CO_SDO_AB_CMD;
SDO_C->state = CO_SDO_ST_ABORT;
break;
}
SDO_C->block_seqno = 0;
(void)CO_fifo_altBegin(&SDO_C->bufFifo, 0);
SDO_C->state = CO_SDO_ST_DOWNLOAD_BLK_SUBBLOCK_REQ;