IBM AIX's 7.3 Python implementation could allow a non-privileged local user to exploit a vulnerability to cause a denial of service. IBM X-Force ID: 267965.
https://www.ibm.com/support/pages/node/7068084
https://exchange.xforce.ibmcloud.com/vulnerabilities/267965
https://aix.software.ibm.com/aix/efixes/security/python_advisory6.asc