This update for libxml2 fixes the following security issues:
CVE-2017-9050: A heap-based buffer over-read in xmlDictAddString (bsc#1039069, bsc#1039661) * CVE-2017-9049: A heap-based buffer overflow in xmlDictComputeFastKey (bsc#1039066) * CVE-2017-9048: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039063) * CVE-2017-9047: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039064)