A security expert discovered that a crafted PDF document that includes an embedded JPG2000 (JP2) image can trigger a buffer overflow in the Chrome PDF reader. The vulnerability is located in the underlying jpeg2000 parsing library, OpenJPEG, but is made exploitable in case of Chrome due to special build process. The last Chrome version 51.0.2704.63 include the fix for the flaw. Google Chrome Browser implements an automatic update process, but users must still restart their browser to enable the changes.”]
Source: http://securityaffairs.co/wordpress/48195/hacking/chrome-pdf-reader-flaw.html