DerefNullResult.qhelp

<!DOCTYPE qhelp PUBLIC
  "-//Semmle//qhelp//EN"
  "qhelp.dtd">
<qhelp>

<overview>
<p>This rule finds a dereference of a function parameter, whose value comes from another function call that may return NULL, without checks in the meantime.</p>
</overview>

<recommendation>
<p>A check should be added between the return of the function which may return NULL, and its use by the function dereferencing ths pointer.</p>
</recommendation>

<example>
<sample src="DerefNullResult.cpp" />
</example>

<references>
<li>
  <a href="https://www.owasp.org/index.php/Null_Dereference">
    Null Dereference
  </a> 
</li>
</references>

</qhelp>