{"id":"PYSEC-2020-171","details":"A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.","modified":"2023-03-14T07:01:09.409324Z","published":"2020-01-22T22:15:00Z","withdrawn":"2023-03-14T07:01:09.409324Z","references":[{"type":"WEB","url":"https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793935"},{"type":"WEB","url":"https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3"},{"type":"WEB","url":"https://github.com/CESNET/libyang/issues/773"}],"schema_version":"1.7.3"}