christoph/wamr
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Fix some issues reported by klocwork (#1233)

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Change memcpy to bh_memcpy_s and add some asserts to
enhance the security.
This commit is contained in:
Xu Jun
2022-06-16 19:50:47 +08:00
committed by GitHub
parent 188d5e70e9
commit 4b38205023
6 changed files with 38 additions and 22 deletions
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13
core/iwasm/common/wasm_application.c
View File

@ -485,7 +485,7 @@ execute_func(WASMModuleInstanceCommon *module_inst, const char *name,
u.ieee.ieee_little_endian.negative = 1;
else
u.ieee.ieee_big_endian.negative = 1;
memcpy(&f32, &u.f, sizeof(float));
bh_memcpy_s(&f32, sizeof(float), &u.f, sizeof(float));
}
if (endptr[0] == ':') {
uint32 sig;
@ -496,10 +496,11 @@ execute_func(WASMModuleInstanceCommon *module_inst, const char *name,
u.ieee.ieee_little_endian.mantissa = sig;
else
u.ieee.ieee_big_endian.mantissa = sig;
memcpy(&f32, &u.f, sizeof(float));
bh_memcpy_s(&f32, sizeof(float), &u.f, sizeof(float));
}
}
memcpy(&argv1[p++], &f32, sizeof(float));
bh_memcpy_s(&argv1[p], total_size - p, &f32, sizeof(float));
p++;
break;
}
case VALUE_TYPE_F64:
@ -517,7 +518,8 @@ execute_func(WASMModuleInstanceCommon *module_inst, const char *name,
ud.ieee.ieee_little_endian.negative = 1;
else
ud.ieee.ieee_big_endian.negative = 1;
memcpy(&u.val, &ud.d, sizeof(double));
bh_memcpy_s(&u.val, sizeof(double), &ud.d,
sizeof(double));
}
if (endptr[0] == ':') {
uint64 sig;
@ -532,7 +534,8 @@ execute_func(WASMModuleInstanceCommon *module_inst, const char *name,
ud.ieee.ieee_big_endian.mantissa0 = sig >> 32;
ud.ieee.ieee_big_endian.mantissa1 = (uint32)sig;
}
memcpy(&u.val, &ud.d, sizeof(double));
bh_memcpy_s(&u.val, sizeof(double), &ud.d,
sizeof(double));
}
}
argv1[p++] = u.parts[0];

8
core/iwasm/common/wasm_runtime_common.c
View File

@ -1245,6 +1245,8 @@ wasm_func_get_param_count(WASMFunctionInstanceCommon *const func_inst,
{
WASMType *type =
wasm_runtime_get_function_type(func_inst, module_inst->module_type);
bh_assert(type);
return type->param_count;
}
@ -1254,6 +1256,8 @@ wasm_func_get_result_count(WASMFunctionInstanceCommon *const func_inst,
{
WASMType *type =
wasm_runtime_get_function_type(func_inst, module_inst->module_type);
bh_assert(type);
return type->result_count;
}
@ -1288,6 +1292,8 @@ wasm_func_get_param_types(WASMFunctionInstanceCommon *const func_inst,
wasm_runtime_get_function_type(func_inst, module_inst->module_type);
uint32 i;
bh_assert(type);
for (i = 0; i < type->param_count; i++) {
param_types[i] = val_type_to_val_kind(type->types[i]);
}
@ -1302,6 +1308,8 @@ wasm_func_get_result_types(WASMFunctionInstanceCommon *const func_inst,
wasm_runtime_get_function_type(func_inst, module_inst->module_type);
uint32 i;
bh_assert(type);
for (i = 0; i < type->result_count; i++) {
result_types[i] =
val_type_to_val_kind(type->types[type->param_count + i]);