ScaleViewPortExtEx in libemf.cpp in libEMF (aka ECMA-234 Metafile Library) 1.0.12 allows an integer overflow and denial of service via a crafted EMF file.
https://sourceforge.net/projects/libemf/
https://sourceforge.net/p/libemf/news/2020/06/release-of-libemf-1013/