libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lysp_stmt_validate_value at lys_parse_mem.c. References: https://github.com/CESNET/libyang/issues/1987
Created libyang tracking bugs for this issue: Affects: epel-7 [bug 2185928] Affects: fedora-all [bug 2185927]