MuPDF is a lightweight PDF viewer and toolkit written in portable C.
Multiple vulnerabilities have been discovered in MuPDF. Please review the CVE identifier and Secunia Research referenced below for details.
A remote attacker could entice a user to open a specially crafted PDF using MuPDF, 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 MuPDF users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/mupdf-1.3_p20140118"