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* gnu/packages/compression.scm (lrzip)[source]: Add patch. * gnu/packages/patches/lrzip-CVE-2017-8842.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it.
23 lines
727 B
Diff
23 lines
727 B
Diff
From 38386bd482c0a8102a79958cb3eddcb97a167ca3 Mon Sep 17 00:00:00 2001
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From: Con Kolivas <kernel@kolivas.org>
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Date: Fri, 9 Mar 2018 17:39:40 +1100
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Subject: [PATCH] CVE-2017-8842 Fix divide-by-zero in bufRead::get
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---
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libzpaq/libzpaq.h | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/libzpaq/libzpaq.h b/libzpaq/libzpaq.h
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index 93387da..cbe211d 100644
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--- a/libzpaq/libzpaq.h
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+++ b/libzpaq/libzpaq.h
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@@ -465,7 +465,8 @@ struct bufRead: public libzpaq::Reader {
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int get() {
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if (progress && !(*s_len % 128)) {
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- int pct = (total_len - *s_len) * 100 / total_len;
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+ int pct = (total_len > 0) ?
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+ (total_len - *s_len) * 100 / total_len : 100;
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if (pct / 10 != *last_pct / 10) {
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int i;
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