Use after free in WebAudio in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1251
https://security.gentoo.org/glsa/202107-06
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html