Description

In display, 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: ALPS11292777; Issue ID: MSV-9195.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.7",
  "pubDate": "2026-10-05T02:16:51.780Z",
  "pubdate": "2026-10-05T02:16:51.780Z",
  "executiveSummary": "This vulnerability involves an out-of-bounds (OOB) write condition within the display subsystem, stemming from inadequate bounds checking during memory operations.\nThe flaw allows for memory corruption, potentially leading to local escalation of privilege (EoP).\nExploitation requires an attacker to have already achieved System-level privileges, acting as a post-exploitation vector for further system compromise or persistence.\nNo user interaction is required for a successful exploit once the initial elevated state is achieved.\nThe vulnerability is identified by Patch ID ALPS11292777 and Issue ID MSV-9195.\nThe risk is primarily localized to systems where an attacker has already bypassed baseline security controls to reach System privilege.",
  "technicalDetails": "The root cause of this vulnerability is the absence of rigorous bounds validation when processing data within the display driver component. When the driver attempts to write data to a memory buffer, it fails to verify that the target address resides within the allocated memory boundaries. This lack of validation allows an attacker to perform an OOB write operation, overwriting adjacent memory structures, such as kernel objects, function pointers, or data buffers.\nGiven the requirement for an attacker to possess System-level privileges, the exploitation flow typically involves identifying a specific, exploitable code path in the display driver that accepts user-supplied or process-supplied inputs. By manipulating these inputs, an attacker can trigger the OOB write. Since the attacker is already operating at a high privilege level (System), they can leverage this corruption to overwrite kernel-mode structures to modify system behavior, disable security features, or inject malicious code into privileged processes.\nStep-by-step exploitation: 1. The attacker, having achieved System privilege, interacts with the vulnerable display driver interface (e.g., via IOCTLs or shared memory interfaces). 2. The attacker crafts a malicious payload containing an index or offset that exceeds the boundaries of the designated target buffer. 3. The display driver processes this input, failing to perform a bounds check before committing the write operation. 4. The write operation occurs outside the buffer's address range, corrupting kernel memory. 5. The attacker gains precise control over the memory state, potentially redirecting execution flow to attacker-controlled code or modifying security-critical variables within the kernel.\nThe impact of this vulnerability is significant, as it enables an attacker to move deeper into the system, potentially achieving persistence or bypassing kernel protections like Kernel Mode Code Integrity (KMCI) or Supervisor Mode Execution Prevention (SMEP), depending on the target system architecture. The vulnerability is contained entirely within the local display subsystem and does not involve remote network vectors."
}