Use after free in Site isolation in Google Chrome prior to 97.0.4692.99 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.
https://chromereleases.googleblog.com/2022/01/stable-channel-update-for-desktop_19.html
http://packetstormsecurity.com/files/166080/Chrome-RenderFrameHostImpl-Use-After-Free.html