Poppler is a cross-platform PDF rendering library originally based on Xpdf.
Felipe Andres Manzano reported a memory management issue in the Page class constructor/destructor.
A remote attacker could entice a user to open a specially crafted PDF file with a Poppler-based PDF viewer such as Gentoo's Xpdf, Epdfview, or Evince, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.
There is no known workaround at this time.
All poppler users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/poppler-0.6.3-r1"