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='2022-06-05 02:00:00 +0200'>2022-06-05</span></td><td><a href='/guix/commit/nix?id=0ace58b99c7292dd962bcd244f274f8033a7fce4'>daemon: Quote consistently within a string.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
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<tr><td><span title='2022-05-18 22:29:55 +0200'>2022-05-18</span></td><td><a href='/guix/commit/nix?id=32916e04f7e1729b7ea5ab768607eb08183c015d'>daemon: runChild() is forbidden to talk during environment set up</a><span class='msg-avail'>...</span></td><td>yarl-baudig@mailoo.org</td></tr>
<tr><td><span title='2022-04-14 14:48:20 +0200'>2022-04-14</span></td><td><a href='/guix/commit/nix?id=5f74169e8e03e64a15499866c6a6de9f38d36f2d'>daemon: Support systemd-style socket activation.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-01-18 18:46:51 +0100'>2022-01-18</span></td><td><a href='/guix/commit/nix?id=575e52ac2b090fd194086e9c1c53bbf8055acbc2'>daemon: Always default to gzip for log compression.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-27 00:49:53 +0100'>2021-11-27</span></td><td><a href='/guix/commit/nix?id=1b1f557d888fa84b1bc818f1b221776355a7a2dd'>daemon: Print the line whence we expect an integer.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-11-25 00:17:21 +0100'>2021-11-25</span></td><td><a href='/guix/commit/nix?id=f9b1bb916c284bea00dd5549a43e0894b219d650'>daemon: Read substitute nar size as 'unsigned long long'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-25 00:17:21 +0100'>2021-11-25</span></td><td><a href='/guix/commit/nix?id=1eb40a6dc4917f5a2e915f8b31b750dba3d378c6'>daemon: Read unsigned nar size and download size from substituter.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-19 23:04:19 +0100'>2021-11-19</span></td><td><a href='/guix/commit/nix?id=24224530d1f4a70808d003ba8dce849b77625b79'>daemon: Micro-optimize 'deletePath'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-16 14:34:28 +0100'>2021-11-16</span></td><td><a href='/guix/commit/nix?id=472a0e82a52a3d5d841e1dfad6b13e26082a5750'>daemon: Do not deduplicate files smaller than 8 KiB.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-10-01 08:58:06 +0000'>2021-10-01</span></td><td><a href='/guix/commit/nix?id=8579304e8f4deaca33b816b2d56af1d814a03bde'>build: Don’t delete ‘guix-gc.timer’ file.</a><span class='msg-avail'>...</span></td><td>Xinglu Chen</td></tr>
<tr><td><span title='2021-09-20 14:18:21 +0000'>2021-09-20</span></td><td><a href='/guix/commit/nix?id=5c4fd77097e2cecfd4780e099af7954f86779fe1'>etc: Add systemd files for running ‘guix gc’ periodically</a><span class='msg-avail'>...</span></td><td>Thiago Jung Bauermann</td></tr>
<tr><td><span title='2021-04-09 17:46:38 +0200'>2021-04-09</span></td><td><a href='/guix/commit/nix?id=2d73086262e1fb33cd0f0f16f74a495fe06b38aa'>daemon: 'guix substitute' replies on FD 4.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-04-03 22:08:33 +0200'>2021-04-03</span></td><td><a href='/guix/commit/nix?id=222fff253c6c6a3d1def16ed90723d7f2c4f9b89'>daemon: Remove dead code.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-03-30 10:29:33 +0300'>2021-03-30</span></td><td><a href='/guix/commit/nix?id=aed51ecea87f9b5045cc888cd1d9653a27813164'>gnu: guix: Fix openrc init scripts.</a><span class='msg-avail'>...</span></td><td>zimoun</td></tr>
<tr><td><span title='2021-03-18 12:18:56 +0100'>2021-03-18</span></td><td><a href='/guix/commit/nix?id=ec7fb669945bfb47c5e1fdf7de3a5d07f7002ccf'>daemon: Prevent privilege escalation with '--keep-failed' [security].</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-03-17 12:03:23 +0100'>2021-03-17</span></td><td><a href='/guix/commit/nix?id=bc3896db25c788c181c7bcd65754e7cd378e9d9f'>daemon: Correctly handle '--discover' with no value.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>