Vulnerability in comedi: dt9812 package - Fix DMA buffers on stack

Kernel Updated 02 Oct 2025

Summary

14/11/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001970: comedi: dt9812: fix DMA buffers on stack. Affects Kernel versions >= 63274cd7d38a3322d90b66a5bc976de1fb899051, < 8a52bc480992c7c9da3ebfea456af731f50a4b97. No fix is published. How to fix ↓

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Background

The comedi: dt9812 package is a component of the Linux Kernel ecosystem. It provides support for the DT9812 data acquisition device. This device is commonly used in industrial and scientific applications to measure and control analog and digital signals. The package includes functionality for handling DMA (Direct Memory Access) buffers, which are used for efficient data transfer between the device and the system's memory. However, a vulnerability has been discovered in the package that involves the use of DMA buffers on the stack, which can lead to potential security issues.

Vulnerability Detail

The vulnerability in the comedi: dt9812 package arises from the usage of DMA buffers on the stack. Storing DMA buffers on the stack can result in memory corruption and potential security vulnerabilities. An attacker could exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The vulnerability was introduced in version v2.6.29 of the Linux Kernel and has been fixed in version v4.14.255 by commit 8a52bc480992c7c9da3ebfea456af731f50a4b97.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The comedi: dt9812 package in the Linux Kernel is vulnerable to a security issue related to the usage of DMA buffers on the stack. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v4.14.255 or later. Additionally, ensure that the comedi: dt9812 package is also updated to the latest version. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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