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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a
<a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1838#note_1936963468">discussion</a>:
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<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">Is my understanding correct that:</p>
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<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">SNI extension handling has sufficient length check at the TLS extension level, so there will not be an opportunity of buffer overrun</li>
<li style="line-height: 1.6em; margin-left: 25px; padding-left: 3px;">The SNI hostname is never unmarshalled but compared (as an opaque data) with the one the server is serving</li>
</ul>
<p dir="auto" style="color: #333238; margin: 0;" align="initial">If both of the above are true, I don't oppose to remove the check. I tested with OpenSSL and it also doesn't check the well-formedness of the hostname.</p>
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