In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
www.openwall.com/lists/oss-security/2022/02/19/1
cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
github.com/libexpat/libexpat/pull/558
lists.debian.org/debian-lts-announce/2022/03/msg00007.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
security.gentoo.org/glsa/202209-24
security.netapp.com/advisory/ntap-20220303-0008/
www.debian.org/security/2022/dsa-5085
www.oracle.com/security-alerts/cpuapr2022.html