Fix crash when relocation section is malformed

Found by a fuzzer Signed-off-by: Dave Thaler <[email protected]>
vbpf · Nov 22, 2024 · 47a35b0 · 47a35b0
1 parent e4750ee
commit 47a35b0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/asm_files.cpp b/src/asm_files.cpp
@@ -245,6 +245,9 @@ 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()) {
+                continue;
+            }
             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());