OpenPBS is the original version of the Portable Batch System. It is a flexible batch queueing system developed for NASA in the early to mid-1990s.
SUSE reported vulnerabilities due to unspecified errors in OpenPBS.
By unspecified attack vectors an attacker might be able execute arbitrary code with the privileges of the user running openpbs, which might be the root user.
There is no known workaround at this time.
OpenPBS has been masked in the Portage tree for replacement by Torque. All OpenPBS users should unmerge OpenPBS and switch to Torque.
# emerge --ask --unmerge sys-cluster/openpbs
# emerge --sync
# emerge --ask --verbose sys-cluster/torque