An integer overflow on 32-bit systems in WebAssembly in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
https://access.redhat.com/errata/RHSA-2018:1195
https://chromereleases.googleblog.com/2018/04/stable-channel-update-for-desktop.html
https://security.gentoo.org/glsa/201804-22