The wmf_malloc function in api.c in libwmf 0.2.8.4 allows remote attackers to cause a denial of service (application crash) via a crafted wmf file, which triggers a memory allocation failure.
https://bugzilla.redhat.com/show_bug.cgi?id=1388450
https://blogs.gentoo.org/ago/2016/10/18/libwmf-memory-allocation-failure-in-wmf_malloc-api-c