Use After Free Vulnerability in net: qrtr
Summary
GSD-2021-1000090: net: qrtr: Avoid potential use after free in MHI send. Affects Kernel versions >= 6e728f321393b1fce9e1c2c3e55f9f7c15991321, < 03c649dee8b1eb5600212a249542a70f47a5ab40. No fix is published. How to fix ↓
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Background
The net: qrtr package is a component of the Linux Kernel, which is responsible for handling communication between different subsystems in the kernel. It provides a mechanism for passing messages between different processes running on the same system. The qrtr module specifically deals with communication over the Qualcomm IPC Router (QRTR) protocol. This vulnerability affects the MHI send functionality within qrtr.
Vulnerability Detail
The vulnerability in net: qrtr is a potential use after free issue in the MHI send feature. A use after free vulnerability occurs when a program continues to use a memory object after it has been freed, leading to unpredictable behavior and potential security risks. In this case, the vulnerability arises due to improper handling of MHI send operations, which could result in the use of freed memory. The impact and attack plausibility of this vulnerability have not been proven yet.
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 net: qrtr package in the Linux Kernel is vulnerable to a use after free issue in the MHI send functionality. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.12.2 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Net: qrtr is a component of the Linux Kernel that handles communication between different subsystems using the Qualcomm IPC Router (QRTR) protocol.
MHI send is a feature within net: qrtr that allows for the sending of messages over the QRTR protocol.
A use after free vulnerability occurs when a program continues to use a memory object after it has been freed, leading to unpredictable behavior and potential security risks.
The impact of this vulnerability is currently unknown as the attack plausibility has not been proven. However, if successfully exploited, it could lead to security breaches and compromise the integrity of the system.
To fix this vulnerability, users should update their Linux Kernel to version v5.12.2 or later.
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