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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/923#note_144026098">NEWS</a>:
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC8" class="line" lang="plaintext">* Version 3.6.7 (unreleased)</span>
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<pre style="margin: 0;"> <span id="LC9" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext">** libgnutls, gnutls tools: Every gnutls_free() will automatically set</span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext"> the free'd pointer to NULL. This prevents possible use-after-free and</span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="plaintext"> double free issues. Use-after-free will be turned into NULL dereference,</span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="plaintext"> effectively turning harmful attacks like remote-code-executions (RCE) into</span>
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<p dir="auto">What about finishing the text at:
<code>will be turned into NULL dereference.</code></p>
<p dir="auto">The <code>turned into NULL dereference, effectively turning harmful attacks like remote-code-executions (RCE) into segmentation faults</code> text, seems to imply that this is not exploitable, but that's hard to prove as it depends on the application. That is, what about:</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true" style="background-color: #fff; font-family: monospace; font-size: 90%; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0;"><code><span id="LC1" class="line" lang="plaintext">* libgnutls, gnutls tools: Every gnutls_free() will automatically set</span>
<span id="LC2" class="line" lang="plaintext"> the free'd pointer to NULL. This prevents possible use-after-free and</span>
<span id="LC3" class="line" lang="plaintext"> double free issues. Use-after-free will be turned into NULL dereference. The counter-measure does not extend to applications using `gnutls_free`.</span></code></pre>
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