ofz#8328 avoid reading past the end of data buffer

Change-Id: I20d9f1aa723dc113e62ae7014bfaa1a61df693d2

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/CDRStylesCollector.cpp b/src/lib/CDRStylesCollector.cpp
index 2dfeba2..2cc3647 100644
--- a/src/lib/CDRStylesCollector.cpp
+++ b/src/lib/CDRStylesCollector.cpp
@@ -127,9 +127,9 @@ void libcdr::CDRStylesCollector::collectBmp(unsigned imageId, unsigned colorMode
         k++;
       }
     }
-    else if (bpp == 32)
+    else if (bpp == 32 && lineWidth >= 4)
     {
-      while (i < lineWidth && k < width)
+      while (i < lineWidth - 3 && k < width)
       {
         unsigned c = (bitmap[j*lineWidth+i+3] << 24) | (bitmap[j*lineWidth+i+2] << 16) | (bitmap[j*lineWidth+i+1] << 8) | (bitmap[j*lineWidth+i]);
         i += 4;