GPU Kernel Vulnerability Allows Sensitive Data Theft

CVE-2023-4969

What is CVE-2023-4969?

CVE-2023-4969 is a vulnerability associated with the software developed by the Khronos Group, which plays a significant role in defining standards for cross-platform graphics and compute APIs. This particular vulnerability pertains to a GPU kernel flaw that enables unauthorized reading of sensitive or private data from one GPU kernel by another, even across different users or applications. The impact on organizations could be substantial, as it raises concerns over data confidentiality, potentially exposing sensitive information that should remain isolated within individual user contexts.

Technical Details

The essence of CVE-2023-4969 lies in the manipulation of an optimized GPU memory region referred to as local memory. In various architectures, this region can be accessed by GPU kernels, allowing for data interchange that should normally be restricted. The flaw indicates that under certain conditions, one GPU kernel can compromise the data privacy of another by reading from this local memory, making it crucial for developers and system architects to be aware of the potential cross-regional data leakage during GPU operations.

Impact of the Vulnerability

1. Data Theft Risk: Organizations face a tangible threat of sensitive data being compromised, as unauthorized access to private user data through GPU memory can lead to significant privacy breaches.

2. Increased Attack Surface: The vulnerability expands the potential attack surface for adversaries, who might exploit this weakness to gain unauthorized access to sensitive computational results, thus jeopardizing user security.

3. Reputational Damage and Compliance Issues: The possible exposure of confidential information could lead to reputational harm for organizations, along with potential violations of data protection regulations, ultimately resulting in legal consequences and financial penalties.

News Articles

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References