An out-of-bounds read in V8 in Google Chrome prior to 57.0.2987.133 for Linux, Windows, and Mac, and 57.0.2987.132 for Android, allowed a remote attacker to obtain heap memory contents via a crafted HTML page.
https://security.gentoo.org/glsa/201704-02
https://chromereleases.googleblog.com/2017/03/stable-channel-update-for-desktop_29.html