Overview
CVE-2025-20767 is a vulnerability affecting display components, characterized by an integer overflow that can lead to an out-of-bounds write. This vulnerability can be exploited by a malicious actor who has already obtained System privilege, potentially leading to local escalation of privilege. No user interaction is required for successful exploitation.
Technical Details
The root cause of CVE-2025-20767 lies in an integer overflow within the display sub-system. Specifically, when handling certain display parameters, the system fails to properly validate the size of an operation, leading to an integer overflow. This overflow results in the allocation of a buffer smaller than required, followed by an out-of-bounds write when data exceeding the allocated buffer size is written. This write operation corrupts adjacent memory, potentially overwriting critical system data or executable code, allowing for privilege escalation.
The vulnerability is tracked internally as Issue ID MSV-4807. The corresponding patch is identified as ALPS10196993.
CVSS Analysis
Unfortunately, a CVSS score and severity rating are not currently available for CVE-2025-20767 at this time. It is recommended to check the official references provided for any updates on the CVSS score and severity once they become available. This missing information is atypical and might suggest a delayed assessment or a limited disclosure scope.
Possible Impact
The successful exploitation of CVE-2025-20767 can have significant security implications. Given that the vulnerability can lead to local escalation of privilege, a malicious application or process running with System privileges could potentially gain root or higher-level privileges. This would allow the attacker to perform unauthorized actions, such as accessing sensitive data, installing malware, or taking complete control of the device. Because no user interaction is needed for exploitation once System privilege is obtained, background processes could silently exploit this vulnerability.
Mitigation and Patch Steps
The recommended mitigation for CVE-2025-20767 is to apply the provided patch (ALPS10196993). Device manufacturers using affected components are urged to integrate this patch into their software updates. End-users should install the latest security updates provided by their device manufacturers as soon as they become available.
Specific steps to take:
- Check for system updates regularly.
- Ensure your device is running the latest available software version.
- Contact your device manufacturer for information about the availability of the patch (ALPS10196993) for your specific device model.
