An Use-After-Free vulnerability in rec_mset_elem_destroy() at rec-mset.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.
https://nvd.nist.gov/vuln/detail/CVE-2021-46022
https://lists.gnu.org/archive/html/bug-recutils/2021-12/msg00007.html
https://github.com/gnu-mirror-unofficial/recutils/commit/34b75ed7ad492c8e38b669ebafe0176f1f9992d2