IBM CICS TX Standard 11.1 and IBM CICS TX Advanced 10.1 and 11.1 could allow a local user to execute arbitrary code on the system due to failure to handle DNS return requests by the
gethostbyaddr
function.
IBM strongly recommends addressing the vulnerabilities now by downloading and applying the below fix.
IBM CICS TX Standard 11.1 Linux Download and apply the fix from Fix Central.