CLSA-2026-1767799681 expat: Fix of 3 CVEs

Rebase to version 2.5.0 - CVE-2024-28757: prevent billion laughs attacks in isolated external parser part of 839, reject direct parameter entity recursion part of 839 - CVE-2025-59375: fix memory amplification and add allocation tracker - CVE-2013-0340: properly handle entities expansion...

CLSA-2025-1741291038 expat: Fix of CVE-2024-28757

CVE-2024-28757: Prevent billion laughs attacks in isolated external parser part of 839 Reject direct parameter entity recursion part of 839...

libxml2 parser.c File Denial of Service Vulnerability

libxml2 is the GNOME project team developed a C-based library for parsing XML documents, which supports multiple encoding formats, Xpath parsing, Well-formed and valid validation. A denial of service vulnerability exists in the parser.c file in versions of libxml2 prior to 2.9.5, which stems from...