Vulnerability in fs: jfs package - Possible NULL Pointer Dereference in dbFree()

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003982: fs: jfs: fix possible NULL pointer dereference in dbFree(). Affects Kernel versions < 070ddf59cf17faf6aae7d89f78e0510c94d07940. No fix is published. How to fix ↓

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Background

The fs: jfs package is a component of the Linux Kernel, which is responsible for managing the JFS (Journaled File System) file system. JFS is a high-performance file system designed for use on IBM AIX operating systems. It provides features such as journaling, which ensures the integrity of file system metadata and data in the event of a system crash. The fs: jfs package is critical for the proper functioning of the JFS file system on Linux systems.

Vulnerability Detail

The vulnerability identified in the fs: jfs package is a possible NULL pointer dereference in the dbFree() function. This vulnerability could allow an attacker to trigger a NULL pointer dereference, leading to a system crash or potential code execution. The dbFree() function is responsible for freeing memory allocated by the JFS file system. If a NULL pointer is passed to this function, it could result in a crash or other unexpected behavior. The 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

No specific workaround has been provided for this vulnerability.

Conclusion

The fs: jfs package in the Linux Kernel was found to have a vulnerability that could lead to a NULL pointer dereference in the dbFree() function. This vulnerability has been fixed in Linux Kernel version v4.14.283. Users are advised to update their Linux Kernel to this version or a later version that includes the fix to mitigate the risk. For further support on vulnerability remediation, you can reach out to DevNack.com.

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