Adobe Reader (formerly Adobe Acrobat Reader) is a closed-source PDF reader.
Multiple vulnerabilities were discovered in Adobe Reader. For further information please consult the CVE entries and the Adobe Security Bulletins referenced below.
A remote attacker might entice a user to open a specially crafted PDF file, possibly resulting in the execution of arbitrary code with the privileges of the user running the application, or a Denial of Service.
There is no known workaround at this time.
All Adobe Reader users should upgrade to the latest stable version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/acroread-9.4.1"