diff options
| -rw-r--r-- | draw/draw_simple_scale.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/draw/draw_simple_scale.c b/draw/draw_simple_scale.c index 606ee2bb..aa00a916 100644 --- a/draw/draw_simple_scale.c +++ b/draw/draw_simple_scale.c @@ -1237,6 +1237,10 @@ fz_scale_pixmap_cached(fz_context *ctx, fz_pixmap *src, float x, float y, float DBUG(("Scale: (%d,%d) to (%g,%g) at (%g,%g)\n",src->w,src->h,w,h,x,y)); + /* Avoid extreme scales where overflows become problematic. */ + if (w > (1<<24) || h > (1<<24) || w < -(1<<24) || h < -(1<<24)) + return NULL; + /* Find the destination bbox, width/height, and sub pixel offset, * allowing for whether we're flipping or not. */ /* The (x,y) position given describes where the top left corner of the |