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Prevent reading beyond bounds of p_access_chain. #84

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Prevent reading beyond bounds of p_access_chain. #84

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13 changes: 7 additions & 6 deletions spirv_reflect.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2252,14 +2252,15 @@ static SpvReflectResult ParseDescriptorBlockVariableUsage(
return SPV_REFLECT_RESULT_ERROR_SPIRV_UNEXPECTED_BLOCK_DATA;
}

uint32_t index = p_access_chain->indexes[index_index];
if (index_index < p_access_chain->index_count) {
uint32_t index = p_access_chain->indexes[index_index];

if (index >= p_var->member_count) {
return SPV_REFLECT_RESULT_ERROR_SPIRV_INVALID_BLOCK_MEMBER_REFERENCE;
}
if (index >= p_var->member_count) {
return SPV_REFLECT_RESULT_ERROR_SPIRV_INVALID_BLOCK_MEMBER_REFERENCE;
}

SpvReflectBlockVariable* p_member_var = &p_var->members[index];

SpvReflectBlockVariable* p_member_var = &p_var->members[index];
if (index_index < p_access_chain->index_count) {
SpvReflectResult result = ParseDescriptorBlockVariableUsage(
p_parser,
p_module,
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