A Null Pointer Deference issue exists in Academy Software Foundation OpenEXR 2.3.0 in generatePreview in makePreview.cpp that can cause a denial of service via a crafted EXR file.
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
https://github.com/AcademySoftwareFoundation/openexr/issues/493
https://github.com/AcademySoftwareFoundation/openexr/commit/74504503cff86e986bac441213c403b0ba28d58f