Debian Security Update DSA-5142 libxml2 - security update

[LinuxBot]

Felix Wilhelm reported that several buffer handling functions in libxml2, a library providing support to read, modify and write XML and HTML files, don't check for integer overflows, resulting in out-of-bounds memory writes if specially crafted, multi-gigabyte XML files are processed. An attacker can take advantage of this flaw for denial of service or execution of arbitrary code.

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