From d5475620534c70cb5b9fc78b97d6206625ca9dc3 Mon Sep 17 00:00:00 2001
From: Martin Matuska <martin@matuska.org>
Date: Tue, 14 Jan 2020 16:35:31 +0100
Subject: [PATCH] archive_ppmd7.c: avoid possible integer overflow (security)

Found by LGTM.com code analysis
---
 libarchive/archive_ppmd7.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libarchive/archive_ppmd7.c b/libarchive/archive_ppmd7.c
index d0bacc68c..4029395b4 100644
--- a/libarchive/archive_ppmd7.c
+++ b/libarchive/archive_ppmd7.c
@@ -1000,7 +1000,7 @@ static void RangeEnc_ShiftLow(CPpmd7z_RangeEnc *p)
 
 static void RangeEnc_Encode(CPpmd7z_RangeEnc *p, UInt32 start, UInt32 size, UInt32 total)
 {
-  p->Low += start * (p->Range /= total);
+  p->Low += (UInt64)start * (UInt64)(p->Range /= total);
   p->Range *= size;
   while (p->Range < kTopValue)
   {
-- 
2.47.2