An issue was discovered in OpenEXR before 2.5.2. An invalid tiled input file could cause invalid memory access in TiledInputFile::TiledInputFile() in IlmImf/ImfTiledInputFile.cpp, as demonstrated by a NULL pointer dereference.
https://security.gentoo.org/glsa/202107-27
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.5.2
https://github.com/AcademySoftwareFoundation/openexr/pull/727
https://github.com/AcademySoftwareFoundation/openexr/blob/master/SECURITY.md
https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00048.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00025.html