<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
/* Page Definitions */
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="ZH-CN" link="#0563C1" vlink="#954F72" style="text-justify-trim:punctuation">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US">Set pointers to NULL after memory is freed to reduce dangling pointers, although they are later set to new values.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From 5567d99099191f0cdb2922555e6ade2634f94f30 Mon Sep 17 00:00:00 2001<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From: renmingshuai <renmingshuai@huawei.com><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Date: Sun, 8 Oct 2023 16:06:46 +0800<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Subject: [PATCH] Set pointers to NULL after memory is freed<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">---<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">src/option.c | 3 +++<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">1 file changed, 3 insertions(+)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">diff --git a/src/option.c b/src/option.c<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">index 286f06b..23601e1 100644<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">--- a/src/option.c<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">+++ b/src/option.c<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">@@ -5732,6 +5732,7 @@ static void clear_dynamic_conf(void)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> else<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> up = &configs->next;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">+ daemon->dhcp_conf = NULL;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">static void clear_dhcp_opt(struct dhcp_opt **dhcp_opts)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">@@ -5755,8 +5756,10 @@ static void clear_dhcp_opt(struct dhcp_opt **dhcp_opts)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">static void clear_dynamic_opt(void)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">{<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> clear_dhcp_opt(&daemon->dhcp_opts);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">+ daemon->dhcp_opts = NULL;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">#ifdef HAVE_DHCP6<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> clear_dhcp_opt(&daemon->dhcp_opts6);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">+ daemon->dhcp_opts6 = NULL;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">#endif<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">--<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2.33.0<o:p></o:p></span></p>
</div>
</body>
</html>