Vulnerability in Kernel Package: afs: Fix page leak
Summary
UVI-2021-1001760: afs: Fix page leak. Affects Kernel versions >= e87b03f5830ecd8ca21836d3ee48c74f8d58fa31, < d130b5fdd42254d92948d06347940276140c927e. 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 afs (Andrew File System) module within the Kernel package enables distributed file sharing and remote file access. It allows users to access files stored on remote servers as if they were local. However, a vulnerability has been discovered in the afs module that could lead to a page leak.
Vulnerability Detail
The identified vulnerability in the afs module of the Kernel package can result in a page leak. This vulnerability was introduced in version v5.13 of the Linux Kernel by commit e87b03f5830ecd8ca21836d3ee48c74f8d58fa31. It was fixed in version v5.14.9 by commit d130b5fdd42254d92948d06347940276140c927e. A page leak occurs when memory pages are not properly released, leading to potential resource exhaustion and system instability. While the impact and attack plausibility of this vulnerability have not been proven, it is crucial to address it to ensure the stability and security of the system.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The identified vulnerability in the afs module of the Kernel package could lead to a page leak, potentially causing resource exhaustion and system instability. It is recommended to update the Linux Kernel package to version v5.14.9 or later to fix this vulnerability. No specific workaround has been provided, and it is crucial to ensure the afs module is updated along with the Kernel package. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if exploited, it could potentially lead to resource exhaustion and system instability due to the page leak.
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 Vulert will provide real-time alerts for open-source vulnerabilities, including this one.
No specific workaround has been provided for this vulnerability. It is recommended to update the Kernel package to the fixed version to address the page leak issue.
The remote exploitability of this vulnerability has not been established. However, it is crucial to apply the fix to prevent potential exploitation and ensure system security.
There are no known instances of this vulnerability being exploited at the time of this report. However, it is essential to proactively address the vulnerability to mitigate any potential risks.
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