From 40ef6e07e0b2cdced57c506e08cf18f47122292d Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@php.net>
Date: Tue, 10 Jun 2014 14:22:04 +0200
Subject: [PATCH] Bug #67412 	fileinfo: cdf_count_chain insufficient
 boundary check

Upstream:
https://github.com/file/file/commit/40bade80cbe2af1d0b2cd0420cebd5d5905a2382
---
 ext/fileinfo/libmagic/cdf.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/ext/fileinfo/libmagic/cdf.c b/ext/fileinfo/libmagic/cdf.c
index c9a5d50..ee467a6 100644
--- a/src/cdf.c
+++ b/src/cdf.c
@@ -457,7 +457,8 @@ size_t
 cdf_count_chain(const cdf_sat_t *sat, cdf_secid_t sid, size_t size)
 {
 	size_t i, j;
-	cdf_secid_t maxsector = (cdf_secid_t)(sat->sat_len * size);
+	cdf_secid_t maxsector = (cdf_secid_t)((sat->sat_len * size)
+	    / sizeof(maxsector));
 
 	DPRINTF(("Chain:"));
 	for (j = i = 0; sid >= 0; i++, j++) {
@@ -467,8 +468,8 @@ cdf_count_chain(const cdf_sat_t *sat, cdf_secid_t sid, size_t size)
 			errno = EFTYPE;
 			return (size_t)-1;
 		}
-		if (sid > maxsector) {
-			DPRINTF(("Sector %d > %d\n", sid, maxsector));
+		if (sid >= maxsector) {
+			DPRINTF(("Sector %d >= %d\n", sid, maxsector));
 			errno = EFTYPE;
 			return (size_t)-1;
 		}
-- 
1.9.2