OSV-2023-316 Segv on unknown address in dwg_ref_get_object

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57981 Crash type: Segv on unknown address Crash state: dwgrefgetobject dwggeojsonfeature dwggeojsonobject...

OSV-2022-388 Segv on unknown address in dwg_ref_get_object

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47151 Crash type: Segv on unknown address Crash state: dwgrefgetobject dwggeojsonfeature dwggeojsonobject...