f2fs: Fix to Avoid Racing on fsync_entry_slab by Multi Filesystem Instances
Summary
GSD-2021-1001208: f2fs: fix to avoid racing on fsync_entry_slab by multi filesystem instances. Affects Kernel versions < e472b276a0d2180808009be38105e12754432e2a. No fix is published. How to fix ↓
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Background
The f2fs package is a file system designed for flash-based storage devices in the Linux Kernel. It provides efficient data management and wear-leveling algorithms to optimize performance and lifespan. The package is widely used in various Linux distributions and is an integral part of the operating system's file system infrastructure.
Vulnerability Detail
The vulnerability identified as GSD-2021-1001208 in the f2fs package allows for a race condition on the fsync_entry_slab when multiple filesystem instances are present. This race condition can lead to potential data corruption or loss when performing fsync operations. An attacker could potentially exploit this vulnerability to manipulate or corrupt data on the affected filesystems, leading to system instability or unauthorized access to sensitive information.
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
The f2fs package in the Linux Kernel is vulnerable to a race condition on the fsync_entry_slab when multiple filesystem instances are present. This vulnerability can result in data corruption or loss, potentially leading to system instability or unauthorized access to sensitive information. It is crucial to update the Linux Kernel to version v5.13.3 or later to mitigate this vulnerability. For more information and assistance, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to data corruption or loss on filesystems using the f2fs package. This can result in system instability or unauthorized access to sensitive information.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies and alert you if any vulnerabilities, including GSD-2021-1001208, are found.
There are no known exploits for this vulnerability at the time of this report. However, it is important to apply the recommended fix to mitigate any potential risks.
You can find more details about this vulnerability in the GSD-2021-1001208 JSON report available on the Cloud Security Alliance's GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001208.json).
For further support or assistance in fixing this vulnerability, you can contact info@devnack.com. They can provide guidance and resources to help you address the vulnerability in your system.
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