An infinite loop vulnerability was found in libtirpc before version 1.0.2-rc2. With the port to using poll rather than select, exhaustion of file descriptors would cause the server to enter an infinite loop, consuming a large amount of CPU time and denying service to other clients until restarted.

References

• https://nvd.nist.gov/vuln/detail/CVE-2018-14621
• https://bugzilla.novell.com/show_bug.cgi?id=968175
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14621
• http://git.linux-nfs.org/?p=steved/libtirpc.git;a=commit;h=fce98161d9815ea016855d9f00274276452c2c4b