A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is not terminated

A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement

A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used

libyang: lyb_read_string() integer overflow → heap buffer overflow

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

In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL

In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL

In function ext_get_plugin() in libyang <= v1.0.225, it doesn't check whether the value of revision is NULL

A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem()

In function read_yin_container() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL