Threats affecting pkg:deb/expat

This security update for the expat XML parser addresses multiple vulnerabilities including an out-of-bounds read in XML_ParseBuffer(), improper validation of UTF-16 surrogate pairs, and a denial of service caused by an integer overflow in expat_realloc. The update also includes bug fixes related to memory leaks and alignment issues. These vulnerabilities have been fixed in expat version 2.8.5.