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validate arg indirect attribute before indexing direction array #8850

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validate arg indirect attribute before indexing direction array #8850

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2 changes: 2 additions & 0 deletions lib/library.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -932,6 +932,8 @@
}
if (const char* const argIndirect = functionnode->Attribute("indirect")) {
const int indirect = strToInt<int>(argIndirect);
if (indirect < 0 || indirect >= static_cast<int>(ac.direction.size()))

@danmar danmar Oct 2, 2026

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please suppress this

return Error(ErrorCode::BAD_ATTRIBUTE_VALUE, argIndirect);
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ac.direction[indirect] = dir; // TODO: handle multiple directions/indirect levels
}
else
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17 changes: 17 additions & 0 deletions test/testlibrary.cpp
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Expand Up @@ -1156,6 +1156,23 @@ class TestLibrary : public TestFixture {

// comma followed by dot
LOADLIB_ERROR_INVALID_RANGE("-10:0,.5:");

// arg indirect out of range (index into ArgumentChecks::direction)
LOADLIBERROR("<?xml version=\"1.0\"?>\n"
"<def>\n"
" <function name=\"foo\">\n"
" <arg nr=\"1\" direction=\"in\" indirect=\"1000000\"/>\n"
" </function>\n"
"</def>",
Library::ErrorCode::BAD_ATTRIBUTE_VALUE);

LOADLIBERROR("<?xml version=\"1.0\"?>\n"
"<def>\n"
" <function name=\"foo\">\n"
" <arg nr=\"1\" direction=\"out\" indirect=\"-5\"/>\n"
" </function>\n"
"</def>",
Library::ErrorCode::BAD_ATTRIBUTE_VALUE);
}

void loadLibCombinations() const {
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