Critical Vulnerability in OpenCV: Uninitialized Pointer Leading to Arbitrary Heap Buffer Write
Summary
DEBIAN-CVE-2025-53644: OpenCV is an Open Source Computer Vision Library. Affects opencv versions < 3.2.0+dfsg-1. Fixed in 3.2.0+dfsg-1. How to fix ↓
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Background
OpenCV is an Open Source Computer Vision Library widely used for real-time computer vision applications. It provides functionalities for image processing, machine learning, and computer vision tasks. The library is known for its efficiency and versatility, making it a popular choice among developers. However, versions prior to 4.12.0 are susceptible to a serious vulnerability that can compromise system integrity when handling crafted JPEG images.
Vulnerability Detail
The vulnerability arises from an uninitialized pointer variable on the stack in OpenCV versions prior to 4.12.0. When the library processes specially crafted JPEG images, this flaw can lead to arbitrary heap buffer writes, potentially allowing attackers to execute arbitrary code or crash the application. This vulnerability poses significant risks, especially in applications that rely on image processing, as it can be exploited remotely.
How To Fix
Minimum fixed version
3.2.0+dfsg-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade opencvTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid processing untrusted JPEG images until the library is updated. Additionally, implementing input validation to filter out potentially harmful image files may help mitigate the risk.
Conclusion
The vulnerability in OpenCV poses a significant risk to applications that handle image processing. Users are strongly advised to update to version 4.12.0 or later to mitigate this risk. By following the provided steps, developers can ensure their applications remain secure against potential exploits.
See every vulnerability recorded for opencv →
FAQ
All versions prior to 4.12.0 are affected by this vulnerability.
Exploitation of this vulnerability can lead to arbitrary code execution or application crashes.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
Yes, the vulnerability is fixed in OpenCV version 4.12.0 and later.
Vulert monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json, providing real-time insights without requiring code access.
References
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