ext4: Fix bug_on ext4_mb_use_inode_pa

Kernel Updated 02 Oct 2025

Summary

31/07/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1004290: ext4: fix bug_on ext4_mb_use_inode_pa. Affects Kernel versions >= cd648b8a8fd5071d232242d5ee7ee3c0815776af, < 887a3e9ad4b8309a2266bce7ae749b2bf1f7a687. No fix is published. How to fix ↓

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Background

The ext4 package is a file system implementation for the Linux kernel. It provides support for the fourth extended file system (ext4) and is widely used in Linux distributions. The ext4 file system offers improved performance, scalability, and reliability compared to its predecessors. However, a vulnerability has been discovered in the ext4 package that could potentially be exploited by attackers.

Vulnerability Detail

The vulnerability, identified as GSD-2022-1004290, originates from a bug in the ext4_mb_use_inode_pa function. This bug can lead to a bug_on condition, causing the system to crash or become unresponsive. While the impact and attack plausibility have not been proven, it is crucial to address this vulnerability to ensure the stability and security of systems running the affected version of the Linux Kernel.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

As this vulnerability can be mitigated by updating the Linux Kernel, there is no specific workaround provided. It is recommended to follow the steps mentioned in the 'how_to_fix' section to address the issue.

Conclusion

In conclusion, the ext4 package in the Linux Kernel is vulnerable to a bug in the ext4_mb_use_inode_pa function. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.18.6 or later. This will ensure the bug is fixed and the system is protected against potential exploits. For further support on vulnerability remediation, you can reach out to DevNack.com.

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