A use after free in PDFium in Google Chrome prior to 55.0.2883.75 for Mac, Windows and Linux, and 55.0.2883.84 for Android allowed a remote attacker to perform an out of bounds memory read via a crafted PDF file.Referenceshttp://rhn.redhat.com/errata/RHSA-2016-2919.htmlhttp://www.securityfocus.com/bid/94633https://crbug.com/653090https://chromereleases.googleblog.com/2016/12/stable-channel-update-for-desktop.html