Overview
CVE-2025-20789 describes a potential information disclosure vulnerability found within the GPU PDMA (Peripheral Direct Memory Access) component. A missing bounds check could allow a malicious actor to potentially access sensitive information. Exploitation of this vulnerability requires local access and user interaction.
Technical Details
The vulnerability stems from the lack of proper bounds checking within the GPU PDMA implementation. Specifically, when handling memory access requests through the PDMA, the system fails to validate the requested memory address against allocated boundaries. This oversight could potentially allow a local attacker, with sufficient knowledge of the system’s memory layout and after some form of user interaction, to read data from unauthorized memory regions. The assigned Patch ID for this issue is ALPS10117741, and the Issue ID is MSV-4538.
CVSS Analysis
Currently, a CVSS score and severity rating for CVE-2025-20789 are not available (N/A). This is likely due to the vulnerability being recently disclosed, and a comprehensive analysis is still underway. The lack of a CVSS score makes it difficult to accurately assess the immediate risk. However, the description indicates that local access and user interaction are required, which may impact the overall severity assessment once available.
Possible Impact
Successful exploitation of CVE-2025-20789 could lead to local information disclosure. An attacker could potentially gain access to sensitive data, such as configuration files, cryptographic keys, or other user-specific information stored in memory. While the vulnerability requires user interaction, a successful exploit could aid an attacker in escalating privileges or performing other malicious activities. The extent of the impact depends on the specific data that can be accessed and the attacker’s ability to leverage that information.
Mitigation or Patch Steps
The recommended mitigation is to apply the patch provided by MediaTek, identified as ALPS10117741. Users should check for available system updates from their device manufacturers and install them promptly. Applying this patch will implement the necessary bounds checking to prevent unauthorized memory access through the GPU PDMA.
