Use After Free Vulnerability in net: qrtr

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000125: net: qrtr: Avoid potential use after free in MHI send. Affects Kernel versions >= 6e728f321393b1fce9e1c2c3e55f9f7c15991321, < ea474054c2cc6e1284604b21361f475c7cc8c0a0. No fix is published. How to fix ↓

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Background

The net: qrtr package is a component of the Linux Kernel that provides support for the Qualcomm Real-Time Transport (QRTR) protocol. QRTR is a communication protocol used for interprocessor communication on Qualcomm Snapdragon SoCs. The net: qrtr package allows processes on different processors to exchange messages and data. This vulnerability affects the MHI send functionality of the net: qrtr package.

Vulnerability Detail

The vulnerability in net: qrtr is a potential use after free issue in the MHI send functionality. A use after free vulnerability occurs when a program continues to use a memory area after it has been freed, which can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a denial of service. This vulnerability was introduced in version v5.8 of the Linux Kernel and was fixed in version v5.11.19.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability.

Conclusion

The use after free vulnerability in the net: qrtr package's MHI send functionality can lead to memory corruption and potential security issues. It is crucial to update the Linux Kernel to version v5.11.19 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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