CVE-2021-3760 : What You Need to Know

A flaw was discovered in the Linux kernel that poses a threat to confidentiality, integrity, and system availability due to a use-after-free vulnerability in the NFC stack.

Understanding CVE-2021-3760

This section will discuss the impact, technical details, and mitigation strategies related to CVE-2021-3760.

What is CVE-2021-3760?

The CVE-2021-3760 pertains to a use-after-free vulnerability in the NFC stack of the Linux kernel, potentially leading to security breaches affecting confidentiality, integrity, and system availability.

The Impact of CVE-2021-3760

The vulnerability poses a significant risk as it could allow attackers to compromise the affected systems, leading to unauthorized access, data breaches, and system disruptions.

Technical Details of CVE-2021-3760

Let's delve into the specifics of the vulnerability including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from a use-after-free issue in the NFC stack of the Linux kernel, enabling malicious actors to exploit it for unauthorized activities.

Affected Systems and Versions

The vulnerability affects systems running the Linux kernel versions including kernel 5.14.15-100.fc33, kernel 5.14.15-200.fc34, and kernel 5.14.15-300.fc35.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious NFC requests, potentially triggering the use-after-free condition and compromising the system.

Mitigation and Prevention

To safeguard your systems from CVE-2021-3760, consider implementing the following security measures.

Immediate Steps to Take

Patch your systems with the latest updates provided by the Linux kernel maintainers.
Monitor network traffic for any suspicious NFC activities.

Long-Term Security Practices

Regularly update your systems and apply security patches promptly.
Conduct routine security audits and vulnerability assessments to identify and address any potential risks.

Patching and Updates

Stay informed about security advisories and patches released by Linux kernel providers to address known vulnerabilities and enhance the overall security posture of your systems.