Description

ELAN reported a potential out-of-bounds write vulnerability in the ELAN TrackPoint driver that, under certain circumstances, could allow a local authenticated user to cause a system crash.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "4.7",
  "pubDate": "2026-08-13T15:19:29.320Z",
  "pubdate": "2026-08-13T15:19:29.320Z",
  "executiveSummary": "ELAN has reported a potential out-of-bounds write vulnerability residing within the ELAN TrackPoint driver. Under specific operating conditions, this security flaw can be weaponized by a local authenticated adversary to trigger a catastrophic system crash, resulting in a Denial of Service (DoS) state.\nThe affected product is the ELAN TrackPoint driver. The risk implications primarily involve system availability disruption, as an improper boundary validation flaw allows memory corruption leading to kernel-level instability or Blue Screen of Death (BSOD) scenarios.\nExploitation of this vulnerability requires local authentication on the target host, meaning an unauthenticated remote attacker cannot directly exploit this flaw across a network boundary. The attacker must possess localized execution capabilities to interact with the vulnerable driver interface and supply malformed input or trigger anomalous memory operations.\nWhile remote exploitation is mitigated by the local access requirement, malicious actors or compromised local standard user accounts can leverage this vulnerability to disrupt critical system operations, bypass availability controls, or cause intermittent service outages across affected endpoints.",
  "technicalDetails": "The vulnerability is fundamentally rooted in an out-of-bounds write flaw within the memory management logic of the ELAN TrackPoint driver. Specifically, the vulnerable component fails to adequately validate the size and boundaries of input buffers or indices supplied via local control input channels before performing memory write operations.\nThe root cause stems from missing bounds-checking routines prior to executing write operations to destination memory pointers managed by the driver. When an authenticated local user issues specific malformed control requests or interacts with the driver interface in an unexpected sequence, the driver attempts to write data past the allocated boundaries of an internal buffer.\nBecause drivers typically operate at high privilege levels (such as Ring 0 in Windows environments), performing an out-of-bounds write within the context of the ELAN TrackPoint driver results in severe memory corruption of adjacent kernel structures, global variables, or stack/heap metadata.\nThe step-by-step attack flow proceeds as follows: First, the local authenticated adversary establishes an execution context on the target operating system. Second, the attacker interacts with the exposed device interfaces or control device objects associated with the ELAN TrackPoint driver. Third, the attacker crafts a malicious payload or input sequence designed to bypass validation checks or exploit the lack of length verification. Fourth, upon processing the input, the driver executes an out-of-bounds write instruction, corrupting critical kernel memory. Finally, the resulting memory corruption violates kernel integrity checks or triggers an unhandled exception, culminating in a system crash and immediate Denial of Service.\nPrerequisites for this attack include local system access and authentication. Network exposure is absent as the vulnerability cannot be reached directly over a network protocol without prior local code execution or administrative interaction. The post-exploitation impact documented is currently limited to system crashes, though memory corruption vulnerabilities in kernel drivers can theoretically present pathways for privilege escalation depending on the specific memory layout and overwritable structures."
}