star-3d

commit 6b75d0ee9f39bd9843657b2f8f3878f042a9fc80
parent 13cf95fb4dd9e82646f64db18b978fbc85d3d262
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Wed, 18 May 2016 15:22:01 +0200

Fix an possible invalid memory read in s3d_scene_trace_rays

An invalid memory read occurred if no rays_data was submited while the
sizeof_ray_data was not null.

Diffstat:
M
src/s3d_scene.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/s3d_scene.c b/src/s3d_scene.c
@@ -942,7 +942,7 @@ s3d_scene_trace_rays
   org_step = mask & S3D_RAYS_SINGLE_ORIGIN ? 0 : 3;
   dir_step = mask & S3D_RAYS_SINGLE_DIRECTION ? 0 : 3;
   range_step = mask & S3D_RAYS_SINGLE_RANGE ? 0 : 2;
-  data_step = mask & S3D_RAYS_SINGLE_DATA ? 0 : sizeof_ray_data;
+  data_step = (mask & S3D_RAYS_SINGLE_DATA) || !rays_data ? 0 : sizeof_ray_data;
   iorg = idir = irange = idata = 0;
 
   FOR_EACH(iray, 0, nrays) {