1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
From 4a8d8b4154334b1714e19b82b061201d41dc87d6 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Tue, 17 Mar 2015 21:59:56 -0700
Subject: [PATCH] Fix bug #69253 - ZIP Integer Overflow leads to writing past
heap boundary
---
ext/zip/lib/zip_dirent.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ext/zip/lib/zip_dirent.c b/ext/zip/lib/zip_dirent.c
index b9dac5c..0090801 100644
--- a/ext/zip/lib/zip_dirent.c
+++ b/ext/zip/lib/zip_dirent.c
@@ -101,7 +101,7 @@ _zip_cdir_new(int nentry, struct zip_error *error)
return NULL;
}
- if ((cd->entry=(struct zip_dirent *)malloc(sizeof(*(cd->entry))*nentry))
+ if ( nentry > ((size_t)-1)/sizeof(*(cd->entry)) || (cd->entry=(struct zip_dirent *)malloc(sizeof(*(cd->entry))*(size_t)nentry))
== NULL) {
_zip_error_set(error, ZIP_ER_MEMORY, 0);
free(cd);
--
2.1.4
|
