Insufficient data validation in networking in Google Chrome prior to 87.0.4280.141 allowed a remote attacker to bypass discretionary access control via malicious network traffic.
https://www.debian.org/security/2021/dsa-4832
https://security.gentoo.org/glsa/202101-05
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html