Out of bounds write in ANGLE in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
https://www.debian.org/security/2021/dsa-4940
https://www.debian.org/security/2021/dsa-4939
https://security.gentoo.org/glsa/202208-14
https://security.gentoo.org/glsa/202202-03
https://lists.debian.org/debian-lts-announce/2021/07/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/07/msg00009.html
https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html