Vulnerability in Kernel: isdn: mISDN: netjet: Fix crash in nj_probe
Summary
GSD-2021-1000827: isdn: mISDN: netjet: Fix crash in nj_probe:. Affects Kernel versions < 958cb1078ca60d214826fd90a0961a447fade59a. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. The specific package under scrutiny in this vulnerability is the isdn module, more specifically the mISDN (Multiprotocol Integrated Services Digital Network) subsystem. The netjet component within mISDN is responsible for handling network communication. However, a flaw has been discovered in the nj_probe function, leading to a crash in certain scenarios.
Vulnerability Detail
The vulnerability arises from a crash in the nj_probe function within the netjet component of the mISDN subsystem. This crash can be triggered under specific conditions, potentially leading to a denial-of-service (DoS) situation. Although the impact and attack plausibility have not been proven, it is crucial to address this vulnerability to ensure system stability and prevent potential exploitation. The vulnerability has been fixed in Linux Kernel version v4.4.273 through commit 958cb1078ca60d214826fd90a0961a447fade59a.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is advised to apply the fix mentioned in the 'how_to_fix' section to address the issue.
Conclusion
In conclusion, the vulnerability in the Kernel's isdn: mISDN: netjet component can lead to a crash in the nj_probe function, potentially resulting in a denial-of-service situation. It is crucial to update the Linux Kernel to version v4.4.273 or later to mitigate this vulnerability. If you require further assistance or support in addressing this vulnerability, please reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it has the potential to cause a denial-of-service (DoS) situation.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and the playground will analyze it for any open-source vulnerabilities, including this one.
No known exploit for this vulnerability has been reported at this time.
The recommended approach is to update the Linux Kernel to the fixed version. However, if updating is not feasible, it is advised to follow security best practices, such as implementing network segmentation and access controls, to minimize the potential impact of this vulnerability.
You can find more information about this vulnerability in the GSD-2021-1000827.json file available in the GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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