CVE-2021-25491 Explained : Impact and Mitigation

A vulnerability in Samsung Mobile devices prior to SMR Oct-2021 Release 1 allows memory corruption via NULL-pointer dereference.

Understanding CVE-2021-25491

This CVE identifies a vulnerability in the mfc driver of Samsung Mobile devices affecting versions P(9.0), Q(10.0), and R(11.0) prior to SMR Oct-2021 Release 1.

What is CVE-2021-25491?

The vulnerability allows attackers to trigger memory corruption through a NULL-pointer dereference in the mfc driver.

The Impact of CVE-2021-25491

The impact is rated as LOW with an overall base score of 2.3 under CVSS v3.1. It requires high privileges for exploitation and has low availability impact.

Technical Details of CVE-2021-25491

The technical details include vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability allows memory corruption through NULL-pointer dereference in the mfc driver prior to SMR Oct-2021 Release 1.

Affected Systems and Versions

Samsung Mobile devices running versions P(9.0), Q(10.0), and R(11.0) before SMR Oct-2021 Release 1 are affected.

Exploitation Mechanism

Attackers with high privileges can exploit the vulnerability locally, leading to memory corruption.

Mitigation and Prevention

To secure your system, consider immediate steps, long-term security practices, and patching and updates.

Immediate Steps to Take

Update your Samsung Mobile device to the latest SMR Oct-2021 Release 1 to mitigate the vulnerability.

Long-Term Security Practices

Regularly update your device, enable automatic updates, and follow safe browsing habits to prevent exploitation.

Patching and Updates

Keep track of security updates provided by Samsung Mobile to patch vulnerabilities and enhance system security.