Null Pointer Dereference in video: fbdev: smscufx

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001884: video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe(). Affects Kernel versions >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5, < c420b540db4b5d69de0a36d8b9d9a6a79a04f05a. No fix is published. How to fix ↓

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Background

The video: fbdev: smscufx package is a component of the Linux Kernel ecosystem. It provides support for the SMSC UFX USB DisplayLink driver, which allows users to connect external displays via USB. This vulnerability affects versions of the Linux Kernel from v3.2 to v5.15.32. The package is responsible for handling USB probes for the UFX driver.

Vulnerability Detail

The vulnerability identified in video: fbdev: smscufx is a null pointer dereference in the ufx_usb_probe() function. This issue was introduced in version v3.2 of the Linux Kernel and was fixed in version v5.15.33. A null pointer dereference occurs when a program attempts to access or manipulate data using a null pointer, leading to a crash or potential code execution. In this case, the vulnerability can be triggered during the USB probe process, potentially allowing an attacker to crash the system or execute arbitrary code.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been provided for this vulnerability.

Conclusion

The null pointer dereference vulnerability in video: fbdev: smscufx can be mitigated by updating the Linux Kernel to version v5.15.33 or later. This update includes the necessary fix to address the issue. For further support on vulnerability remediation, please contact DevNack.com.

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