Ensure core dumps are restricted - limits.conf


A core dump is the memory of an executable program. It is generally used to determine why a program aborted. It can also be used to glean confidential information from a core file. The system provides the ability to set a soft limit for core dumps, but this can be overridden by the user.


Add the following line to /etc/security/limits.conf or a /etc/security/limits.d/* file:
* hard core 0

Set the following parameter in /etc/sysctl.conf or a /etc/sysctl.d/* file:
fs.suid_dumpable = 0

Run the following command to set the active kernel parameter:
# sysctl -w fs.suid_dumpable=0

See Also