The GNU Core Utilities are the basic file, shell and text manipulation utilities of the GNU operating system.
A vulnerability has been discovered in the Coreutils "split" program that can lead to a heap buffer overflow and possibly arbitrary code execution.
Please review the referenced CVE identifiers for details.
There is no known workaround at this time.
All Coreutils users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/coreutils-9.4-r1"