Description

In Power HAL, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11165543; Issue ID: MSV-9011.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.7",
  "pubDate": "2026-09-07T02:17:19.587Z",
  "pubdate": "2026-09-07T02:17:19.587Z",
  "executiveSummary": "This vulnerability involves an out-of-bounds (OOB) write flaw located within the Power HAL component. The issue originates from a missing bounds check during memory operations, which creates a critical memory safety vulnerability. If successfully exploited, this flaw permits an attacker who has already compromised the system with System-level privileges to perform further malicious actions, effectively escalating their privilege level or manipulating kernel-space structures.\nThe vulnerability does not require user interaction, making it a highly effective target for an attacker who has achieved initial system-level code execution. The primary risk is the loss of system integrity and the potential for persistent unauthorized access. The vulnerability is tracked under Issue ID MSV-9011 and addressed by Patch ID ALPS11165543.",
  "technicalDetails": "The vulnerability resides in the Power HAL (Hardware Abstraction Layer), a critical interface used by the Android framework to interact with device-specific power management hardware. The root cause of this vulnerability is an inadequate input validation mechanism where the length of an incoming data buffer is not verified against the allocated destination buffer size.\nSpecifically, the Power HAL fails to perform mandatory bounds checking when processing requests or data packets before writing them into a fixed-length memory segment. Because the destination buffer is located in memory, an attacker providing a crafted input exceeding the expected size can cause the write operation to exceed the buffer boundary, resulting in an out-of-bounds write.\nThe exploitation flow begins with an attacker who has already gained System-level privilege access to the device. By interacting with the Power HAL interface, the attacker sends a malicious request containing a payload designed to trigger the unsafe memory write. Since the component performs no validation on the size of the incoming data, the subsequent copy or write operation overwrites adjacent memory addresses. Depending on the memory layout and the specific target of the overwrite, this can lead to the corruption of neighboring function pointers, return addresses on the stack, or critical control structures within the process's memory space.\nBy precisely controlling the data written out-of-bounds, an attacker can redirect the execution flow of the Power HAL service. Because the service operates with elevated privileges, this primitive allows for arbitrary code execution within the context of the Power HAL process. Given the existing System privilege requirement, this attack facilitates a lateral move or a privilege escalation from a privileged system process to a higher level of control, potentially bypassing existing security constraints. The lack of required user interaction ensures that once the malicious payload is delivered by the privileged actor, the exploitation occurs synchronously and without detection by the user interface."
}