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fix memory overflow in sha driver #11

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fix memory overflow in sha driver #11

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0c2742e
fix memory overflow in sha driver
schoeler Nov 2, 2023
0fa4da7
fix comparison operator on sntp packet handler
schoeler Nov 6, 2023
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14 changes: 13 additions & 1 deletion components/si91x/crypto/sha/src/sl_si91x_sha.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,19 @@
#include "sl_constants.h"
#include "sl_si91x_protocol_types.h"
#include "sl_si91x_driver.h"
#include "sl_si91x_sha.h"
#include <string.h>


static const uint8_t sha_digest_len_table[] =
{
[SL_SI91x_SHA_1] = SL_SI91x_SHA_1_DIGEST_LEN,
[SL_SI91x_SHA_256] = SL_SI91x_SHA_256_DIGEST_LEN,
[SL_SI91x_SHA_384] = SL_SI91x_SHA_384_DIGEST_LEN,
[SL_SI91x_SHA_512] = SL_SI91x_SHA_512_DIGEST_LEN,
[SL_SI91x_SHA_224] = SL_SI91x_SHA_224_DIGEST_LEN
};

/*==============================================*/
/**
* @brief Compute the SHA digest. This is a blocking API.
Expand Down Expand Up @@ -101,7 +113,7 @@ static sl_status_t sha_pending(uint8_t sha_mode,
}

packet = sl_si91x_host_get_buffer_data(buffer, 0, NULL);
memcpy(digest, packet->data, request->total_msg_length);
memcpy(digest, packet->data, sha_digest_len_table[sha_mode]);

free(request);
sl_si91x_host_free_buffer(buffer, SL_WIFI_RX_FRAME_BUFFER);
Expand Down
2 changes: 1 addition & 1 deletion components/si91x/sl_net/src/sl_net_si91x_integration_handler.c
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Expand Up @@ -114,7 +114,7 @@ void sl_net_si91x_event_dispatch_handler(sl_si91x_queue_packet_t *data, sl_si91x
#endif

#ifdef SNTP_CLIENT_FEATURE
if (packet->command & RSI_WLAN_RSP_SNTP_CLIENT) {
if (packet->command == RSI_WLAN_RSP_SNTP_CLIENT) {
si91x_sntp_event_handler(data);
return;
}
Expand Down