DBD-Pg is a PostgreSQL interface module for Perl.
Format string vulnerabilities have been found in the the "pg_warn()" and "dbd_st_prepare()" functions in dbdimp.c.
A remote PostgreSQL server could send specially crafted database warnings or DBD statements, possibly resulting in execution of arbitrary code.
There is no known workaround at this time.
All users of the Perl DBD-Pg module should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/DBD-Pg-2.19.0"