Xiaoshan Sun : comctl32/dsa: Handle overflow in DSA_InsertItem().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0d57ff3d1f63f7486733f8619f3916867ebd26c5
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0d57ff3d1f63f7486733f8619f...

Author: Xiaoshan Sun 
Date:   Sun Jul 24 14:44:40 2016 +0300

comctl32/dsa: Handle overflow in DSA_InsertItem().

Signed-off-by: Xiaoshan Sun 
Signed-off-by: Nikolay Sivov 
Signed-off-by: Alexandre Julliard

---

dlls/comctl32/dsa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/comctl32/dsa.c b/dlls/comctl32/dsa.c
index a73a54a..d5e8234 100644
--- a/dlls/comctl32/dsa.c
+++ b/dlls/comctl32/dsa.c
@@ -267,6 +267,9 @@ INT WINAPI DSA_InsertItem (HDSA hdsa, INT nIndex, LPVOID pSrc)
         nNewItems = hdsa->nMaxCount + hdsa->nGrow;
         nSize = hdsa->nItemSize * nNewItems;

+        if (nSize / hdsa->nItemSize != nNewItems)
+            return -1;
+
         lpTemp = ReAlloc (hdsa->pData, nSize);
         if (!lpTemp)
             return -1;