CVE-2021-4053: 
vulnerability analysis and mitigation

CVE-2021-4053 is a Use-after-free vulnerability discovered in the UI component of Google Chrome on Linux systems prior to version 96.0.4664.93. The vulnerability was disclosed in December 2021 and affected Chrome browsers running on Linux platforms (Chrome Release, NVD).

The vulnerability is classified as a Use-after-free (CWE-416) issue in the UI component of Chrome. It received a CVSS v3.1 base score of 8.8 HIGH with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating high severity with potential for significant impact (NVD). The vulnerability could be exploited through a crafted HTML page, requiring user interaction.

If successfully exploited, this vulnerability could allow a remote attacker to potentially exploit heap corruption via a crafted HTML page, potentially leading to arbitrary code execution with the same privileges as the Chrome browser process (NVD).

Google released a fix in Chrome version 96.0.4664.93. Users and administrators are advised to upgrade to this version or later. Various Linux distributions have also released security updates to address this vulnerability, including Debian (version 97.0.4692.71-0.1~deb11u1) and Fedora (Debian Advisory, Fedora Update).