This update for libxml2 fixes the following issues: Security issues fixed: - CVE-2017-9050: heap-based buffer overflow [bsc#1039069, bsc#1039661] - CVE-2017-9049: heap-based buffer overflow [bsc#1039066] - CVE-2017-9048: stack overflow vulnerability [bsc#1039063] - CVE-2017-9047: stack overflow vulnerability [bsc#1039064] A clarification for the previously released update: For CVE-2016-9318 we decided not to ship a fix since it can break existing setups. Please take appropriate actions if you parse untrusted XML files and use the new -noxxe flag if possible .