CVE-2021-38001: 
vulnerability analysis and mitigation

Type confusion in V8 in Google Chrome prior to version 95.0.4638.69 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. The vulnerability was identified as CVE-2021-38001 and was reported by @s0rrymybad of Kunlun Lab via Tianfu Cup on October 16, 2021 (Chrome Release).

The vulnerability is classified as a Type Confusion vulnerability (CWE-843) in Chrome's V8 JavaScript engine. 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 remote exploitation (NVD).

The vulnerability could lead to heap corruption when exploited, potentially allowing an attacker to execute arbitrary code within the context of the browser. The high CVSS score indicates potential for significant impact on confidentiality, integrity, and availability of the affected system (NVD).

Google released a fix in Chrome version 95.0.4638.69. Users and administrators are advised to update to this version or later. The vulnerability was also addressed in various Linux distributions including Debian with version 97.0.4692.71-0.1~deb11u1 and Fedora with version 96.0.4664.110-3.fc34 (Debian Advisory, Fedora Update).