Vulnerability in kgdboc package: Incorrect return value of __setup handler
Summary
GSD-2022-1002428: kgdboc: fix return value of __setup handler. Affects Kernel versions >= 8305d98c58d238b82c0def1e4395724381c58c9e, < c7a24a174143ef91f763b5b4f7213bf8a16896a1. No fix is published. How to fix ↓
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Background
The kgdboc package is a kernel module in the Linux Kernel ecosystem. It provides support for kernel debugging over a serial console. This module allows developers to debug the kernel by connecting a remote debugger to the target system via a serial port. The kgdboc module is an essential tool for troubleshooting and analyzing kernel issues.
Vulnerability Detail
The vulnerability in the kgdboc package arises from an incorrect return value in the __setup handler. This flaw can potentially be exploited by an attacker to execute arbitrary code or escalate privileges on a vulnerable system. The vulnerability was introduced in version v4.14.81 of the Linux Kernel and was fixed in version v4.14.276. It is crucial to update to the latest version to mitigate the risk of exploitation.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version to ensure the security of the system.
Conclusion
The vulnerability in the kgdboc package, which resulted from an incorrect return value in the __setup handler, can be mitigated by updating the Linux Kernel to version v4.14.276 or later. It is essential to promptly apply the necessary updates to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
kgdboc is a kernel module in the Linux Kernel ecosystem that enables kernel debugging over a serial console. It allows developers to connect a remote debugger to the target system via a serial port for troubleshooting and analyzing kernel issues.
The vulnerability in kgdboc can be exploited by an attacker to execute arbitrary code or escalate privileges on a vulnerable system. This can lead to unauthorized access, data breaches, or system compromise.
This vulnerability was discovered through code analysis and security testing of the Linux Kernel. The incorrect return value in the __setup handler was identified as a potential security weakness.
No, only versions starting from v4.14.81 are affected by this vulnerability. It is recommended to update to version v4.14.276 or later to fix the issue.
At the time of this report, there is no known public exploit for this vulnerability. However, it is crucial to update to the fixed version to prevent potential exploitation.
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