CVE-2021-3764 : Exploit Details and Defense Strategies

A memory leak vulnerability was discovered in the Linux Kernel's ccp_run_aes_gcm_cmd() function, which could be exploited by an attacker to trigger a denial of service, impacting system availability. Here are the details of CVE-2021-3764:

Understanding CVE-2021-3764

This section provides insights into what CVE-2021-3764 entails.

What is CVE-2021-3764?

The vulnerability identified as CVE-2021-3764 is a memory leak flaw in the Linux kernel's ccp_run_aes_gcm_cmd() function. This flaw can be abused by malicious actors to cause a denial of service.

The Impact of CVE-2021-3764

The primary risk associated with CVE-2021-3764 is the disruption of system availability due to the memory leak vulnerability.

Technical Details of CVE-2021-3764

This section delves into the technical aspects of CVE-2021-3764.

Vulnerability Description

The vulnerability lies in the ccp_run_aes_gcm_cmd() function of the Linux kernel, potentially leading to a denial of service attack.

Affected Systems and Versions

The Linux Kernel versions prior to v5.15-rc4 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by triggering the memory leak flaw in the ccp_run_aes_gcm_cmd() function, causing a denial of service.

Mitigation and Prevention

Here, we discuss how to mitigate the risks posed by CVE-2021-3764.

Immediate Steps to Take

Immediate actions include updating the Linux Kernel to version v5.15-rc4 to address the memory leak flaw.

Long-Term Security Practices

Implementing secure coding practices, regular security assessments, and monitoring can enhance overall system security.

Patching and Updates

Regularly applying security patches and updates provided by the Linux Kernel maintainers is crucial to prevent exploitation of vulnerabilities like CVE-2021-3764.