Description

In gpu, there is a possible system crash due to use after free. This could lead to local information disclosure with User execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11122991; Issue ID: MSV-8132.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.5",
  "pubDate": "2026-09-07T02:17:20.257Z",
  "pubdate": "2026-09-07T02:17:20.257Z",
  "executiveSummary": "A critical use-after-free (UAF) vulnerability has been identified within the GPU driver component, identified by Issue ID MSV-8132.\nThis memory corruption flaw stems from improper lifecycle management of memory objects within the graphics processing unit's driver stack.\nThe vulnerability allows a local attacker with user-level privileges to trigger a system crash or potentially achieve local information disclosure.\nSuccessful exploitation requires user interaction, meaning a victim must be tricked into performing an action that initiates the vulnerable driver code path.\nThe primary risk involves the unauthorized access to sensitive memory contents or denial of service through system instability.\nThe vulnerability is restricted to the local context, as it necessitates active user execution privileges and cannot be triggered remotely without initial local access.",
  "technicalDetails": "The vulnerability resides in the GPU driver's memory management subsystem. A use-after-free condition occurs when the driver fails to properly synchronize or invalidate references to a memory object after it has been deallocated or freed.\nIn the context of the GPU driver, this usually manifests when a resource—such as a command buffer, synchronization object, or texture memory handle—is prematurely released while a separate execution thread or hardware context still maintains an active pointer or reference to that memory address.\nThe attack flow initiates when an attacker with local user privileges executes a malicious or specially crafted application designed to interact with the GPU interface. This application triggers a series of API calls that force the driver to deallocate a specific memory resource while simultaneously triggering a request for the driver to perform an operation on that same resource.\nBecause the driver does not nullify the dangling pointer after the initial 'free' operation, the subsequent access attempts to interact with memory that may have been repurposed by the system or another process. This leads to undefined behavior, which in this instance results in a system crash or the leak of residual information contained within the reallocated memory segments.\nThe requirement for user interaction suggests that the malicious application likely requires the user to trigger specific driver-intensive tasks—such as initiating a 3D rendering context or executing complex compute kernels—that utilize the vulnerable code path.\nFrom an exploitation perspective, once the dangling pointer is dereferenced, an attacker could potentially gain read access to kernel-space or other process-space memory, depending on what data occupied the memory slot post-deallocation. This poses a significant threat to data confidentiality, as sensitive information could be extracted by monitoring the output of the corrupted memory transactions.\nThe flaw underscores a lack of reference counting or insufficient locking mechanisms during high-concurrency graphics operations, allowing for race conditions that result in the UAF state. The impact is primarily local, necessitating that the attacker already has sufficient privileges to execute binary code on the target system to interact with the GPU driver interface."
}