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[DIFF-INFORMED] C++: ConstantSizeArrayOffByOne

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Nora Dimitrijević
2025-07-15 15:24:32 +02:00
parent 448a1ea87a
commit fabdf9923c
1 changed files with 14 additions and 0 deletions
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14
cpp/ql/src/experimental/Security/CWE/CWE-193/ConstantSizeArrayOffByOne.ql
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@@ -183,6 +183,20 @@ module ArrayAddressToDerefConfig implements DataFlow::StateConfigSig {
pointerArithOverflow(pai, _)
)
}
predicate observeDiffInformedIncrementalMode() { any() }
Location getASelectedSourceLocation(DataFlow::Node source) {
exists(Variable v | result = v.getLocation() | isSourceImpl(source, v))
}
Location getASelectedSinkLocation(DataFlow::Node sink) {
exists(PointerArithmeticInstruction pai, Instruction deref |
result = [pai, deref].getLocation() and
isInvalidPointerDerefSink2(sink, deref, _) and
isSink(sink, ArrayAddressToDerefConfig::TOverflowArithmetic(pai))
)
}
}
module ArrayAddressToDerefFlow = DataFlow::GlobalWithState<ArrayAddressToDerefConfig>;