CVE-2021-25408 : Security Advisory and Response

A buffer overflow vulnerability in the NPU driver of Samsung Mobile devices prior to SMR JUN-2021 Release 1 could lead to arbitrary memory write and code execution.

Understanding CVE-2021-25408

This section provides insights into the impact and technical details of CVE-2021-25408.

What is CVE-2021-25408?

The CVE-2021-25408 CVE record highlights a potential buffer overflow vulnerability in the NPU driver of Samsung Mobile devices before the SMR JUN-2021 Release 1, which enables attackers to execute arbitrary code by writing to memory locations.

The Impact of CVE-2021-25408

The vulnerability poses a critical risk by allowing attackers to overwrite memory and execute malicious code on affected Samsung Mobile devices with specific chipsets and versions.

Technical Details of CVE-2021-25408

This section dives into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to a buffer overflow issue in the NPU driver, enabling unauthorized memory writes and potential code execution.

Affected Systems and Versions

Samsung Mobile devices running P(9.0), Q(10.0), R(11.0) with Exynos9820, 9830, 980, and 2100 chipsets are impacted before SMR JUN-2021 Release 1.

Exploitation Mechanism

Attackers can exploit this vulnerability to achieve arbitrary memory writes and execute malicious code, leading to significant security risks.

Mitigation and Prevention

In this section, learn about the necessary steps to mitigate and prevent exploitation of CVE-2021-25408.

Immediate Steps to Take

Users are advised to update their Samsung Mobile devices to SMR JUN-2021 Release 1 or later to patch the vulnerability and prevent potential attacks.

Long-Term Security Practices

To enhance device security, users should regularly install security updates, remain vigilant against suspicious activities, and follow best cybersecurity practices.

Patching and Updates

Stay informed about security updates and promptly apply patches released by Samsung Mobile to safeguard devices against known vulnerabilities.