CVE-2021-30546: 
Google Chrome vulnerability analysis and mitigation

CVE-2021-30546 is a Use-after-free vulnerability discovered in the Autofill feature of Google Chrome versions prior to 91.0.4472.101. The vulnerability was reported by Abdulrahman Alqabandi from Microsoft Browser Vulnerability Research on May 8, 2021, and was publicly disclosed in June 2021 (Chrome Release).

The vulnerability is classified as a high-severity issue with a CVSS v3.1 base score of 8.8 (HIGH). The vulnerability vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and user interaction required. The vulnerability is categorized as CWE-416 (Use After Free) and allows potential exploitation of heap corruption through a crafted HTML page (NVD).

If successfully exploited, this vulnerability could allow a remote attacker to potentially exploit heap corruption, which could lead to arbitrary code execution, information disclosure, or denial of service. The high CVSS score indicates potential severe impacts on confidentiality, integrity, and availability of the affected system (Gentoo Security).

The vulnerability was patched in Google Chrome version 91.0.4472.101. Users and administrators are strongly advised to upgrade to this version or later. Various Linux distributions have also released security updates, including Fedora and Gentoo, which provide fixed packages through their respective package management systems (Fedora Update, Gentoo Security).