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fix(relinker): reject load file sizes beyond memory size

This commit is contained in:
Aarav 2026-10-13 14:06:18 +05:30
parent 398ccaaf96
commit bc014a887c
2 changed files with 13 additions and 0 deletions
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3
core/relinker/relinker/src/parsing/ElfReader.cpp
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@ -130,6 +130,9 @@ std::vector<ProgramHeader> ElfReader::ReadProgramHeaders() const {
ph.MemorySize = _readU64At(offset + 0x28);
ph.Alignment = _readU64At(offset + 0x30);
if (ph.Type == PT_LOAD && ph.FileSize > ph.MemorySize)
throw RelinkerException("PT_LOAD file size exceeds memory size", ph.Offset);
headers.push_back(ph);
offset += header.ProgramHeaderEntrySize;
}

10
core/relinker/relinker/tests/test_linux_load_alignment.py
View File

@ -54,6 +54,16 @@ def main():
if alignment != 0x4000 or first[3] % alignment != 0 or first[7] != alignment:
raise AssertionError(("first PT_LOAD is not aligned to the largest segment alignment", segments))
assert " |-- output.elf\n |-- libs/\n |-- *.prx (system libraries)\n |-- app0/" in result.stdout, result.stdout
malformed = fixture()
struct.pack_into("<Q", malformed, 64 + 40, 0x0fff)
source.write_bytes(malformed)
output.unlink()
result = subprocess.run([str(relinker), "--skip-sce-module", str(source), str(output)],
capture_output=True, text=True, timeout=20)
assert result.returncode == 2 and "PT_LOAD file size exceeds memory size" in result.stderr and not output.exists(), result
source.write_bytes(fixture())
named_exe = Path(directory) / "linux.EXE"
warning = subprocess.run([str(relinker), "--skip-sce-module", str(source), str(named_exe)], capture_output=True, text=True, timeout=20)
assert warning.returncode == 0, (warning.stdout, warning.stderr)