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;
sg' value='1'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=b2b799e2d8330af934f48bf66afb5114addb4dd7'>refs</a><a class='active' href='/guix/log/gnu/packages/rails.scm?showmsg=1'>log</a><a href='/guix/tree/gnu/packages/rails.scm?id=b2b799e2d8330af934f48bf66afb5114addb4dd7'>tree</a><a href='/guix/commit/gnu/packages/rails.scm?id=b2b799e2d8330af934f48bf66afb5114addb4dd7'>commit</a><a href='/guix/diff/gnu/packages/rails.scm?id=b2b799e2d8330af934f48bf66afb5114addb4dd7'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/rails.scm'>
<input type='hidden' name='id' value='b2b799e2d8330af934f48bf66afb5114addb4dd7'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=b2b799e2d8330af934f48bf66afb5114addb4dd7&amp;showmsg=1'>root</a>/<a href='/guix/log/gnu?id=b2b799e2d8330af934f48bf66afb5114addb4dd7&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/packages?id=b2b799e2d8330af934f48bf66afb5114addb4dd7&amp;showmsg=1'>packages</a>/<a href='/guix/log/gnu/packages/rails.scm?id=b2b799e2d8330af934f48bf66afb5114addb4dd7&amp;showmsg=1'>rails.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/rails.scm?id=b2b799e2d8330af934f48bf66afb5114addb4dd7'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2021-02-23 16:04:27 +0200'>2021-02-23</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/rails.scm?id=3c548c3e0eade12d3e86b1201dbd95863ca64ea7'>gnu: ruby-rails: Update to 6.1.3.</a></td><td>Efraim Flashner</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/rails.scm (ruby-activemodel, ruby-activerecord,
ruby-actionview, ruby-actionpack, ruby-actioncable, ruby-activejob,
ruby-activestorage, ruby-actionmailer, ruby-railties, ruby-rails):
Update to 6.1.3.
(ruby-actiontext, ruby-actionmailbox): New variables.
(ruby-actioncable)[propagated-inputs]: Add ruby-activesupport.
(ruby-activestorage)[propagated-inputs]: Add ruby-activejob,
ruby-activesupport, ruby-mimemagic.
(ruby-actionmailer)[propagated-inputs]: Add ruby-activesupport.
(ruby-railties)[propagated-inputs]: Add ruby-rake.
(ruby-rails)[propagated-inputs]: Add ruby-actionmailbox,
ruby-actiontext.
* gnu/packages/ruby.scm (ruby-activesupport): Update to 6.1.3.
[propagated-inputs]: Add ruby-zeitwerk.
[home-page]: Use https.


</td></tr>
<tr class='logheader'><td><span title='2021-02-23 16:04:27 +0200'>2021-02-23</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/rails.scm?id=fa0a244138196604cb735691493bed5c71477248'>gnu: ruby-web-console: Update to 4.1.0.</a></td><td>Efraim Flashner</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/rails.scm (ruby-web-console): Update to 4.1.0.


</td></tr>
<tr class='logheader'><td><span title='2021-02-23 16:04:26 +0200'>2021-02-23</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/rails.scm?id=6519e611293fd1b89dd3085fdbb99d8887116170'>gnu: ruby-rails-html-sanitizer: Update to 1.3.0.</a></td><td>Efraim Flashner</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/rails.scm (ruby-rails-html-sanitizer): Update to 1.3.0.


</td></tr>
<tr class='logheader'><td><span title='2021-02-23 16:04:26 +0200'>2021-02-23</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/rails.scm?id=945d5d039ac81489eba40c35ef6ea53ba8b26f7b'>gnu: ruby-rails-dom-testing: Update to 2.0.3.</a></td><td>Efraim Flashner</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/rails.scm (ruby-rails-dom-testing): Update to 2.0.3.


</td></tr>