Vulnerability in Kernel - rose: check NULL rose_loopback_neigh->loopback
Summary
GSD-2022-1005951: rose: check NULL rose_loopback_neigh->loopback. Affects Kernel versions >= 7f0ddd41e2899349461b578bec18e8bd492e1765, < 6e4b20d548fc97ecbdca15c8d96302ee5e3e6313. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as process management, memory management, and device drivers. The rose module within the Kernel is responsible for supporting the ROSE (Radio Over IP) protocol, which enables radio communication over IP networks. However, a vulnerability has been identified in the rose module that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in the rose module of the Kernel arises from a failure to properly check for NULL values in the rose_loopback_neigh->loopback structure. This oversight could lead to a NULL pointer dereference, resulting in a kernel panic or other unexpected behavior. While the exact impact and attack vectors have not been proven, it is crucial to address this vulnerability to ensure the stability and security of the system.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.212 or later. The fix for this issue was implemented in commit 6e4b20d548fc97ecbdca15c8d96302ee5e3e6313. Updating the Kernel will ensure that the necessary checks for NULL values in the rose_loopback_neigh->loopback structure are in place, mitigating the risk of a NULL pointer dereference.
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Workaround
As a temporary workaround, users can disable the rose module if it is not required for their system. This can be achieved by executing the following command as root:
rmmod rose
However, it is important to note that disabling the rose module may impact any functionality or applications that rely on the ROSE protocol.
Conclusion
In conclusion, a vulnerability has been identified in the rose module of the Kernel that could lead to a NULL pointer dereference. It is crucial to update the Linux Kernel to the recommended version or apply the temporary workaround to mitigate the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The Kernel is a crucial component of the Linux operating system that provides essential functionalities and acts as a bridge between the hardware and software layers.
The rose module is a part of the Kernel that supports the ROSE (Radio Over IP) protocol, enabling radio communication over IP networks.
A NULL pointer dereference occurs when a program attempts to access or manipulate memory using a pointer that points to NULL (a memory address with no assigned value). This can lead to crashes, unexpected behavior, or potential security vulnerabilities.
The exact impact of this vulnerability is not yet proven. However, it could potentially result in a kernel panic or other unexpected behavior, compromising the stability and security of the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.4.212 or later, which includes the necessary fix for the NULL pointer dereference issue in the rose module.
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