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Fix GH-16465: Heap buffer overflow in DOMNode->getElementByTagName #16467

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If the input contains NUL bytes then the length doesn't match the actual duplicated string's length. Note that libxml can't handle this properly anyway so we just reject NUL bytes and too long strings.

If the input contains NUL bytes then the length doesn't match the actual
duplicated string's length. Note that libxml can't handle this properly
anyway so we just reject NUL bytes and too long strings.
@nielsdos nielsdos linked an issue Oct 16, 2024 that may be closed by this pull request
@nielsdos nielsdos closed this in d70f3ba Oct 16, 2024
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Heap buffer overflow in DOMNode -> getElementByTagName
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