grep is the GNU regular expression matcher.
An integer overflow flaw has been discovered in grep.
An attacker could entice a user to run grep on a specially crafted file, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All grep users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/grep-2.12"