A use after free in WebRTC in Google Chrome prior to 69.0.3497.81 allowed a remote attacker to potentially exploit heap corruption via a crafted video file.
https://www.exploit-db.com/exploits/45443/
https://security.gentoo.org/glsa/201811-10
https://chromereleases.googleblog.com/2018/09/stable-channel-update-for-desktop.html