Bobfriesenhahn

**Name of the Vulnerable Software and Affected Versions** libheif versions prior to 1.19.6 **Description** The issue is caused by a NULL pointer dereference in `ImageItem Grid::get decoder` in `image-items/grid.cc`, which occurs when a grid image references a nonexistent image item. **Recommendations** For versions prior to 1.19.6, update to version 1.19.6 or later to resolve the issue. As a temporary workaround, consider restricting the use of grid images that reference nonexistent image items until a patch is available.

**Name of the Vulnerable Software and Affected Versions** GraphicsMagick versions prior to 1.3.46 **Description** The issue is related to JXL in GraphicsMagick, which lacks image dimension resource limits. **Recommendations** For versions prior to 1.3.46, update to version 1.3.46 or later to resolve the issue.