When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.CreditsGil PortnoyStan UlbrychBénédikt TranStan UlbrychReferenceshttps://github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf532768https://mail.python.org/archives/list/security-announce@python.org/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R/https://github.com/python/cpython/issues/145986https://github.com/python/cpython/pull/145987https://github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd4ahttps://github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1f3
