djvulibre/trunk/djvulibre-check-image-size.patch

   1 diff --git a/libdjvu/IW44Image.cpp b/libdjvu/IW44Image.cpp
   2 index e8d4b44..aa3d554 100644
   3 --- a/libdjvu/IW44Image.cpp
   4 +++ b/libdjvu/IW44Image.cpp
   5 @@ -678,7 +678,11 @@ IW44Image::Map::image(signed char *img8, int rowsize, int pixsep, int fast)
   6    size_t sz = bw * bh;
   7    if (sz / (size_t)bw != (size_t)bh) // multiplication overflow
   8      G_THROW("IW44Image: image size exceeds maximum (corrupted file?)");
   9 +  if (sz == 0)
  10 +    G_THROW("IW44Image: zero size image (corrupted file?)");
  11    GPBuffer<short> gdata16(data16,sz);
  12 +  if (data16 == NULL)
  13 +    G_THROW("IW44Image: unable to allocate image data");
  14    // Copy coefficients
  15    int i;
  16    short *p = data16;