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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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xen-4.19.0-4.fc41

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