cve@mitre.org reports:
CVE-2021-42612: A use after free in cleanup_index in index.c in Halibut 1.2 allows
an attacker to cause a segmentation fault or possibly have other
unspecified impact via a crafted text document.
CVE-2021-42613: A double free in cleanup_index in index.c in Halibut 1.2 allows an
attacker to cause a denial of service or possibly have other
unspecified impact via a crafted text document.
CVE-2021-42614: A use after free in info_width_internal in bk_info.c in Halibut 1.2
allows an attacker to cause a segmentation fault or possibly have
unspecified other impact via a crafted text document.