Vulnerability in f2fs: fix to do sanity check on curseg->alloc_type

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001151: f2fs: fix to do sanity check on curseg->alloc_type. Affects Kernel versions < c12765e3f129b144421c80d3383df885f85ee290. 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 techniques to optimize performance and longevity of flash storage. However, a vulnerability has been discovered in the package that could potentially be exploited by attackers.

Vulnerability Detail

The vulnerability in the f2fs package arises from a missing sanity check on the curseg->alloc_type parameter. This oversight could lead to memory corruption or other unexpected behavior, potentially allowing an attacker to execute arbitrary code or crash the system. The impact and attack plausibility of this vulnerability have not yet been proven, but it is important to address it to ensure the security and stability of the system.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.17.2 or later. This fix is implemented in commit c12765e3f129b144421c80d3383df885f85ee290. Updating the kernel will ensure that the necessary sanity check is performed on the curseg->alloc_type parameter, mitigating the vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability. The recommended course of action is to apply the fix by updating the Linux Kernel.

Conclusion

The vulnerability in the f2fs package can be addressed by updating the Linux Kernel to version v5.17.2 or later. This will ensure the necessary sanity check is performed on the curseg->alloc_type parameter, mitigating the vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.

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