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Fix: Memory alignment issues #3530

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Merged
jyao1 merged 2 commits into from
Mar 3, 2026
Merged

Fix: Memory alignment issues #3530

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4e675e0
Fix: Memory alignment issues
ShitalJumbad Feb 20, 2026
483881c
Fix: Memory alignment issues in unit tests, fuzzing tests, and sample…
ShitalJumbad Feb 25, 2026
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5 changes: 3 additions & 2 deletions library/spdm_common_lib/libspdm_com_opaque_data.c
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Original file line number Diff line number Diff line change
Expand Up @@ -255,8 +255,9 @@ bool libspdm_process_general_opaque_data_check(libspdm_context_t *spdm_context,
return false;
}

opaque_element_data_len = *(uint16_t *)((size_t)(opaque_element_table_header + 1) +
opaque_element_table_header->vendor_len);
opaque_element_data_len = libspdm_read_uint16(
(const uint8_t *)(opaque_element_table_header + 1) +
opaque_element_table_header->vendor_len);

current_element_len = sizeof(opaque_element_table_header_t) +
opaque_element_table_header->vendor_len +
Expand Down
6 changes: 3 additions & 3 deletions library/spdm_requester_lib/libspdm_req_get_endpoint_info.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2025 DMTF. All rights reserved.
* Copyright 2025-2026 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -240,7 +240,7 @@ static libspdm_return_t libspdm_try_get_endpoint_info(libspdm_context_t *spdm_co
}

ptr += SPDM_NONCE_SIZE;
ep_info_data_len = *(uint32_t *) ptr;
ep_info_data_len = libspdm_read_uint32(ptr);
if (spdm_response_size !=
sizeof(spdm_endpoint_info_response_t) + SPDM_NONCE_SIZE +
signature_size + ep_info_data_len + sizeof(uint32_t)) {
Expand Down Expand Up @@ -286,7 +286,7 @@ static libspdm_return_t libspdm_try_get_endpoint_info(libspdm_context_t *spdm_co

/* nonce and signature not present */
ptr = (uint8_t *)(spdm_response + 1);
ep_info_data_len = *(uint32_t *) ptr;
ep_info_data_len = libspdm_read_uint32(ptr);
if (spdm_response_size <
sizeof(spdm_endpoint_info_response_t) + ep_info_data_len + sizeof(uint32_t)) {
status = LIBSPDM_STATUS_INVALID_MSG_SIZE;
Expand Down
4 changes: 2 additions & 2 deletions library/spdm_requester_lib/libspdm_req_handle_error_response.c
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Original file line number Diff line number Diff line change
Expand Up @@ -375,8 +375,8 @@ libspdm_return_t libspdm_handle_error_large_response(
break;
}

large_response_size = *(uint32_t*) (spdm_response + 1);
chunk_ptr = (uint8_t*) (((uint32_t*) (spdm_response + 1)) + 1);
large_response_size = libspdm_read_uint32((const uint8_t *)(spdm_response + 1));
chunk_ptr = (uint8_t *)(spdm_response + 1) + sizeof(uint32_t);

if (spdm_response->chunk_size > large_response_size) {
status = LIBSPDM_STATUS_INVALID_MSG_FIELD;
Expand Down
3 changes: 2 additions & 1 deletion library/spdm_requester_lib/libspdm_req_send_receive.c
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Original file line number Diff line number Diff line change
Expand Up @@ -439,7 +439,8 @@ static libspdm_return_t libspdm_handle_large_request(
}

if (send_info->chunk_seq_no == 0) {
*(uint32_t *)(spdm_request + 1) = (uint32_t)send_info->large_message_size;
libspdm_write_uint32((uint8_t *)(spdm_request + 1),
(uint32_t)send_info->large_message_size);
chunk_ptr += sizeof(uint32_t);
copy_size -= sizeof(uint32_t);
}
Expand Down
4 changes: 2 additions & 2 deletions os_stub/spdm_device_secret_lib_sample/psk.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2024 DMTF. All rights reserved.
* Copyright 2024-2026 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -172,7 +172,7 @@ bool libspdm_psk_master_secret_hkdf_expand(
return result;
}

*(uint16_t *)m_libspdm_bin_str0 = (uint16_t)hash_size;
libspdm_write_uint16((uint8_t *)m_libspdm_bin_str0, (uint16_t)hash_size);
/* patch the version*/
m_libspdm_bin_str0[6] = (char)('0' + ((spdm_version >> 12) & 0xF));
m_libspdm_bin_str0[8] = (char)('0' + ((spdm_version >> 8) & 0xF));
Expand Down
4 changes: 2 additions & 2 deletions unit_test/fuzzing/test_requester/test_spdm_requester_challenge/challenge.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2025 DMTF. All rights reserved.
* Copyright 2021-2026 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -85,7 +85,7 @@ libspdm_return_t libspdm_device_receive_message(void *spdm_context, size_t *resp
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer),
Expand Down
7 changes: 4 additions & 3 deletions unit_test/fuzzing/test_requester/test_spdm_requester_key_exchange/key_exchange.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2025 DMTF. All rights reserved.
* Copyright 2021-2026 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -52,7 +52,8 @@ size_t libspdm_test_get_key_exchange_request_size(const void *spdm_context, cons
}

opaque_length =
*(uint16_t *)((size_t)buffer + sizeof(spdm_key_exchange_request_t) + dhe_key_size);
libspdm_read_uint16((const uint8_t *)buffer +
sizeof(spdm_key_exchange_request_t) + dhe_key_size);
message_size += opaque_length;
if (buffer_size < message_size) {
return buffer_size;
Expand Down Expand Up @@ -169,7 +170,7 @@ libspdm_return_t libspdm_device_receive_message(void *spdm_context, size_t *resp
ptr += dhe_key_size;
/* libspdm_zero_mem (ptr, hash_size);
* ptr += hash_size;*/
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_rsp_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_rsp_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_version_selection_data(spdm_context,
SECURED_SPDM_VERSION_11 <<
Expand Down
16 changes: 8 additions & 8 deletions unit_test/fuzzing/test_responder/test_spdm_responder_key_exchange/key_exchange.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/**
* Copyright Notice:
* Copyright 2021-2024 DMTF. All rights reserved.
* Copyright 2021-2026 DMTF. All rights reserved.
* License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
**/

Expand Down Expand Up @@ -91,7 +91,7 @@ void libspdm_test_responder_key_exchange_case1(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -159,7 +159,7 @@ void libspdm_test_responder_key_exchange_case2(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -291,7 +291,7 @@ void libspdm_test_responder_key_exchange_case4(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -368,7 +368,7 @@ void libspdm_test_responder_key_exchange_case5(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -436,7 +436,7 @@ void libspdm_test_responder_key_exchange_case6(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -503,7 +503,7 @@ void libspdm_test_responder_key_exchange_case7(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down Expand Up @@ -592,7 +592,7 @@ void libspdm_test_responder_key_exchange_case8(void **State)
libspdm_dhe_free(m_libspdm_use_dhe_algo, dhe_context);
opaque_key_exchange_req_size =
libspdm_get_opaque_data_supported_version_data_size(spdm_context);
*(uint16_t *)ptr = (uint16_t)opaque_key_exchange_req_size;
libspdm_write_uint16(ptr, (uint16_t)opaque_key_exchange_req_size);
ptr += sizeof(uint16_t);
libspdm_build_opaque_data_supported_version_data(spdm_context, &opaque_key_exchange_req_size,
ptr);
Expand Down
40 changes: 20 additions & 20 deletions unit_test/test_spdm_requester/challenge.c
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Original file line number Diff line number Diff line change
Expand Up @@ -199,7 +199,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -279,7 +279,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -419,7 +419,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer)
Expand Down Expand Up @@ -571,7 +571,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer)
Expand Down Expand Up @@ -649,7 +649,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -743,7 +743,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -817,7 +817,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -891,7 +891,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -965,7 +965,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1039,7 +1039,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = (uint16_t)strlen("libspdm");
libspdm_write_uint16(Ptr, (uint16_t)strlen("libspdm"));
Ptr += sizeof(uint16_t);
libspdm_copy_mem(Ptr, (size_t)(*response) + *response_size - (size_t)Ptr, "libspdm",
strlen("libspdm"));
Expand Down Expand Up @@ -1116,7 +1116,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1192,7 +1192,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);
*(uint16_t *)Ptr = 0;
libspdm_write_uint16(Ptr, 0);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1302,7 +1302,7 @@ static libspdm_return_t receive_message(
ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);
libspdm_get_random_number (SPDM_NONCE_SIZE, ptr);
ptr += SPDM_NONCE_SIZE;
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1372,7 +1372,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, spdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += spdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) - m_libspdm_local_buffer_size,
Expand Down Expand Up @@ -1458,7 +1458,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1537,7 +1537,7 @@ static libspdm_return_t receive_message(
ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(&m_libspdm_local_buffer[m_libspdm_local_buffer_size],
sizeof(m_libspdm_local_buffer) -
Expand Down Expand Up @@ -1621,7 +1621,7 @@ static libspdm_return_t receive_message(
Ptr += SPDM_NONCE_SIZE;
/* libspdm_zero_mem (Ptr, libspdm_get_hash_size (m_libspdm_use_hash_algo));
* Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);*/
*(uint16_t *)Ptr = opaque_length;
libspdm_write_uint16(Ptr, opaque_length);
Ptr += sizeof(uint16_t);
libspdm_set_mem(Ptr, opaque_length, 255);
Ptr += opaque_length;
Expand Down Expand Up @@ -1743,7 +1743,7 @@ static libspdm_return_t receive_message(
Ptr += libspdm_get_hash_size (m_libspdm_use_hash_algo);
libspdm_get_random_number (SPDM_NONCE_SIZE, Ptr);
Ptr += SPDM_NONCE_SIZE;
*(uint16_t *)Ptr = (uint16_t)m_libspdm_opaque_data_size;
libspdm_write_uint16(Ptr, (uint16_t)m_libspdm_opaque_data_size);
Ptr += sizeof(uint16_t);
libspdm_copy_mem(Ptr, (size_t)(*response) + *response_size - (size_t)Ptr,
m_libspdm_opaque_data,
Expand Down Expand Up @@ -1818,7 +1818,7 @@ static libspdm_return_t receive_message(
ptr += libspdm_get_hash_size(m_libspdm_use_hash_algo);
libspdm_get_random_number(SPDM_NONCE_SIZE, ptr);
ptr += SPDM_NONCE_SIZE;
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_copy_mem(ptr, SPDM_REQ_CONTEXT_SIZE, m_requester_context, SPDM_REQ_CONTEXT_SIZE);
ptr += SPDM_REQ_CONTEXT_SIZE;
Expand Down Expand Up @@ -1899,7 +1899,7 @@ static libspdm_return_t receive_message(
ptr += libspdm_get_hash_size(m_libspdm_use_hash_algo);
libspdm_get_random_number(SPDM_NONCE_SIZE, ptr);
ptr += SPDM_NONCE_SIZE;
*(uint16_t *)ptr = 0;
libspdm_write_uint16(ptr, 0);
ptr += sizeof(uint16_t);
libspdm_get_random_number(SPDM_REQ_CONTEXT_SIZE,ptr);
ptr += SPDM_REQ_CONTEXT_SIZE;
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