From 38386bd482c0a8102a79958cb3eddcb97a167ca3 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Fri, 9 Mar 2018 17:39:40 +1100
Subject: [PATCH] CVE-2017-8842 Fix divide-by-zero in bufRead::get

---
 libzpaq/libzpaq.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libzpaq/libzpaq.h b/libzpaq/libzpaq.h
index 93387da..cbe211d 100644
--- a/libzpaq/libzpaq.h
+++ b/libzpaq/libzpaq.h
@@ -465,7 +465,8 @@ struct bufRead: public libzpaq::Reader {
 
 	int get() {
 		if (progress && !(*s_len % 128)) {
-			int pct = (total_len - *s_len) * 100 / total_len;
+			int pct = (total_len > 0) ?
+				(total_len - *s_len) * 100 / total_len : 100;
 
 			if (pct / 10 != *last_pct / 10) {
 				int i;
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<tr><td><span title='2023-04-21 00:44:01 -0400'>2023-04-21</span></td><td><a href='/guix/commit/gnu/packages/aux-files/xml?id=9a03afbe17be9344aa632b20467c83ac226835a6'>gnu: docbook-xml-4.1.2: Add missing catalog.xml.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/aux-files/xml/docbook-xml/catalog-4.1.2.xml: New file.
* Makefile.am: Register it.
* gnu/packages/docbook.scm (docbook-xml-4.1.2)[arguments]: Use prebuilt catalog.xml.
[native-inputs]: Add libxml2.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Bruno Victal</td></tr>
<tr><td><span title='2023-04-21 00:44:00 -0400'>2023-04-21</span></td><td><a href='/guix/commit/gnu/packages/aux-files/xml?id=e9ba6d2c47bacae433be1a6c629d4d307206245a'>gnu: docbook-xml: Use XSLT to patch catalog.xml.</a><span class='msg-avail'>...<span class='msg-tooltip'>(sxml transforms) are unsuited here due to guile-bug #20339.

* gnu/packages/aux-files/xml/patch-catalog-xml.xsl: New file.
* Makefile.am: Register it.
* gnu/packages/docbook.scm (docbook-xml-5)[native-inputs]: Add libxslt.
[arguments]: Add phase to patch catalog.xml using XSLT.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Bruno Victal</td></tr>