From b34d259a81500d75e4cf435f1e8b262ba7e1421a Mon Sep 17 00:00:00 2001
From: balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 14 Jan 2008 03:48:37 +0000
Subject: [PATCH] Add a path length check to prevent heap overflow (Eric
 Milliken).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3916 c046a42c-6fe2-441c-8c8c-71466251a162
---
 block-vmdk.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/block-vmdk.c b/block-vmdk.c
index af979a1e8e..9b5fb7346a 100644
--- a/block-vmdk.c
+++ b/block-vmdk.c
@@ -341,6 +341,8 @@ static int vmdk_parent_open(BlockDriverState *bs, const char * filename)
         p_name += sizeof("parentFileNameHint") + 1;
         if ((end_name = strchr(p_name,'\"')) == 0)
             return -1;
+        if ((end_name - p_name) > sizeof (s->hd->backing_file) - 1)
+            return -1;
 
         strncpy(s->hd->backing_file, p_name, end_name - p_name);
         if (stat(s->hd->backing_file, &file_buf) != 0) {
-- 
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