libxml2: use-after-free in xmlEncodeEntitiesInternal() in entities.c Reference: https://gitlab.gnome.org/GNOME/libxml2/-/issues/230 Upstream patch: https://gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539 CREATE(Triage):(User=admin) CVE-2021-3516 (https://nvd.nist.gov/vuln/detail/CVE-2021-3516)