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C++/ConstantSizeArrayOffByOne

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This commit is contained in:
Nora Dimitrijević
2025-10-15 13:17:29 +02:00
parent 974d174757
commit 464f6cb096
1 changed files with 4 additions and 2 deletions
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6
cpp/ql/src/experimental/Security/CWE/CWE-193/ConstantSizeArrayOffByOne.ql
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@@ -187,12 +187,14 @@ module ArrayAddressToDerefConfig implements DataFlow::StateConfigSig {
predicate observeDiffInformedIncrementalMode() { any() }
Location getASelectedSourceLocation(DataFlow::Node source) {
exists(Variable v | result = v.getLocation() | isSourceImpl(source, v))
exists(Variable v | result = v.getLocation() or result = source.getLocation() |
isSourceImpl(source, v)
)
}
Location getASelectedSinkLocation(DataFlow::Node sink) {
exists(PointerArithmeticInstruction pai, Instruction deref |
result = [pai, deref].getLocation() and
result = [[pai, deref].getLocation(), sink.getLocation()] and
isInvalidPointerDerefSink2(sink, deref, _) and
isSink(sink, ArrayAddressToDerefConfig::TOverflowArithmetic(pai))
)