CVE-2025-23275
📋 TL;DR
This vulnerability in NVIDIA CUDA Toolkit's nvJPEG component allows a local authenticated user to trigger a GPU out-of-bounds write by providing specific image dimensions, potentially leading to denial of service or information disclosure. It affects all platforms where NVIDIA CUDA Toolkit is installed, requiring local access and authentication for exploitation.
💻 Affected Systems
- NVIDIA CUDA Toolkit
📦 What is this software?
Nvjpeg by Nvidia
⚠️ Risk & Real-World Impact
Worst Case
Exploitation could cause GPU instability, system crashes, or leakage of sensitive data from GPU memory, impacting system availability and confidentiality.
Likely Case
Most probable impact is denial of service through GPU errors or application crashes, disrupting CUDA-dependent workloads.
If Mitigated
With proper access controls limiting local user privileges, the risk is reduced to minimal, as exploitation requires authenticated access.
🎯 Exploit Status
Exploitation requires local authenticated access and knowledge of specific image dimensions to trigger the out-of-bounds write, making it moderately complex.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to NVIDIA advisory for specific patched versions (e.g., CUDA Toolkit version X.Y or later).
Vendor Advisory: https://nvidia.custhelp.com/app/answers/detail/a_id/5661
Restart Required: No
Instructions:
1. Visit the NVIDIA advisory URL. 2. Download and install the latest CUDA Toolkit version as specified. 3. Verify installation and test nvJPEG functionality.
🔧 Temporary Workarounds
Restrict Local User Access
allLimit access to systems with CUDA Toolkit to trusted users only, reducing the attack surface for local authenticated exploits.
🧯 If You Can't Patch
- Implement strict access controls to minimize the number of local authenticated users who could exploit the vulnerability.
- Monitor systems for unusual GPU activity or crashes that might indicate exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check the installed CUDA Toolkit version; if it is prior to the patched version listed in the NVIDIA advisory, the system is vulnerable.Check Version:
On Linux/macOS: nvcc --version or cat /usr/local/cuda/version.txt; On Windows: Check NVIDIA Control Panel or run nvcc --version in Command Prompt.Verify Fix Applied:
After updating, confirm the CUDA Toolkit version matches or exceeds the patched version specified in the advisory.📡 Detection & Monitoring
Log Indicators:
- Look for GPU error logs, application crashes related to nvJPEG, or unusual out-of-bounds write events in system logs.
Network Indicators:
- No direct network indicators, as this is a local vulnerability.
SIEM Query:
Example: search for 'nvJPEG' AND ('crash' OR 'error' OR 'out-of-bounds') in application or system logs.