f2fs: quota: fix loop condition at f2fs_quota_sync()
Summary
GSD-2022-1002281: f2fs: quota: fix loop condition at f2fs_quota_sync(). Affects Kernel versions >= a02982545e61020c23f411b073ba5171381138e4, < f1d5946d47c0827bae39e1537959ce8d6f0224c5. 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 and reliable storage management for devices such as solid-state drives (SSDs). The f2fs_quota_sync() function is responsible for synchronizing quota information in the file system. Quota support allows administrators to limit the amount of disk space a user or group can consume. However, a loop condition in the f2fs_quota_sync() function can lead to incorrect synchronization of quota information, potentially resulting in incorrect disk space usage calculations and quota enforcement.
Vulnerability Detail
The vulnerability in the f2fs_quota_sync() function arises from a loop condition that is not properly handled. This loop condition can prevent the correct synchronization of quota information, leading to inaccurate disk space usage calculations and quota enforcement. An attacker could potentially exploit this vulnerability to bypass quota restrictions and consume more disk space than allowed. The impact of this vulnerability can vary depending on the specific system configuration and the presence of quota restrictions.
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 recommended to update the Linux kernel to the latest version as soon as possible.
Conclusion
The f2fs package in the Linux kernel is vulnerable to a loop condition in the f2fs_quota_sync() function, which can result in incorrect synchronization of quota information. This vulnerability can be fixed by updating the Linux kernel to version v5.4.189 or later. It is recommended to update the kernel as soon as possible to ensure accurate disk space usage calculations and quota enforcement. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
f2fs is a file system designed for flash-based storage devices in the Linux kernel. It provides efficient and reliable storage management for devices such as solid-state drives (SSDs).
The f2fs_quota_sync() function is responsible for synchronizing quota information in the f2fs file system. Quota support allows administrators to limit the amount of disk space a user or group can consume.
The vulnerability can lead to incorrect synchronization of quota information in the f2fs file system. This can result in inaccurate disk space usage calculations and quota enforcement. An attacker could potentially exploit this vulnerability to bypass quota restrictions and consume more disk space than allowed.
To fix this vulnerability, it is recommended to update the Linux kernel to version v5.4.189 or later. The fix for this vulnerability was implemented in commit f1d5946d47c0827bae39e1537959ce8d6f0224c5.
There is no known workaround for this vulnerability. It is recommended to update the Linux kernel to the latest version as soon as possible.
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