Command Ring Pointer Corruption Vulnerability in xhci

Kernel Updated 02 Oct 2025

Summary

14/11/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

UVI-2021-1001952: xhci: Fix command ring pointer corruption while aborting a command. Affects Kernel versions < 22bcb65ea41072ab5d03c0c6290e04e0df6d09a0. No fix is published. How to fix ↓

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Background

The xhci package is a component of the Linux Kernel that provides support for USB 3.0 and USB 2.0 host controller drivers. It allows communication between the host system and USB devices. The command ring is a data structure used by the xhci driver to manage and execute commands sent to USB devices. However, a vulnerability exists in the xhci driver that can lead to command ring pointer corruption when aborting a command.

Vulnerability Detail

The command ring pointer corruption vulnerability in xhci occurs when a command is aborted. This can result in the corruption of the command ring pointer, leading to potential issues with command execution and device communication. The exact impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v4.14.252 by commit 22bcb65ea41072ab5d03c0c6290e04e0df6d09a0.

How To Fix

No fixed version is published for this vulnerability.

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Conclusion

The command ring pointer corruption vulnerability in xhci can be mitigated by updating the Linux Kernel to version v4.14.252 or later. This vulnerability has the potential to impact command execution and device communication. For further support on vulnerability remediation, please contact DevNack.com.

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