grep: User-assisted execution of arbitrary code

Background

grep is the GNU regular expression matcher.

Description

An integer overflow flaw has been discovered in grep.

Impact

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.

Workaround

There is no known workaround at this time.

Resolution

All grep users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-apps/grep-2.12"