Vulnerability in Kernel package: llc: only change llc->dev when bind() succeeds
Summary
GSD-2022-1001631: llc: only change llc->dev when bind() succeeds. Affects Kernel versions >= 6f5bf395c60ed2643de51f2b1041cb0882e9d97f, < 313ab7d716675b12cfde3d78981f21785b139279. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system. It provides the core functionality and interfaces for the system's hardware, software, and processes. The llc module within the Kernel package is responsible for managing the Link Layer Control (LLC) protocol. This protocol is used for communication between devices on a local network. The llc module interacts with network devices and performs various operations, including binding to a specific device. However, a vulnerability has been discovered in the llc module, which can lead to potential security risks.
Vulnerability Detail
The llc module in the Kernel package has a vulnerability that allows the device to be changed even if the bind() operation fails. This means that an attacker could potentially manipulate the llc->dev parameter to point to a different network device, leading to unauthorized access or other malicious activities. The vulnerability was introduced in version v5.16.18 of the Linux Kernel and was fixed in version v5.16.18 by commit 313ab7d716675b12cfde3d78981f21785b139279. It is important to note that the actual impact and attack plausibility of this vulnerability have not yet been proven.
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
In conclusion, a vulnerability has been identified in the llc module of the Kernel package, which can potentially allow unauthorized access or other malicious activities. It is recommended to update the Kernel package to version v5.16.18 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it has the potential to allow unauthorized access or other malicious activities by manipulating the llc->dev parameter.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
There is currently no known exploit for this vulnerability. However, it is always recommended to apply security updates promptly to mitigate any potential risks.
The specific prerequisites for exploiting this vulnerability are not yet known. Further analysis and research are required to determine the exact conditions under which this vulnerability can be exploited.
You can find more information about this vulnerability in the GSD-2022-1001631 entry of the GSD Database maintained by the Cloud Security Alliance. The entry provides detailed information about the vulnerability, including its impact, affected package versions, and relevant references.
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