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Fix crash when relocation section is malformed #800

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Nov 23, 2024
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Fix crash when relocation section is malformed #800

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4 changes: 4 additions & 0 deletions src/asm_files.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -245,6 +245,10 @@ static void append_subprograms(raw_program& prog, const vector<raw_program>& pro

auto [symbol_name, section_index] =
get_symbol_name_and_section_index(symbols, reloc.relocation_entry_index);
if (section_index >= reader.sections.size()) {
throw UnmarshalError("Invalid section index " + std::to_string(section_index) + " at source offset " +
std::to_string(reloc.source_offset));
}
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ELFIO::section& subprogram_section = *reader.sections[section_index];
auto subprogram = read_subprogram(subprogram_section, symbols, symbol_name);
prog.prog.insert(prog.prog.end(), subprogram.begin(), subprogram.end());
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