ext4: Fix bug_on ext4_mb_use_inode_pa
Summary
GSD-2022-1004752: ext4: fix bug_on ext4_mb_use_inode_pa. Affects Kernel versions >= cd648b8a8fd5071d232242d5ee7ee3c0815776af, < a6b31616e5afe1d3972cb0682a373e50597faf5c. No fix is published. How to fix ↓
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Background
The ext4 package is a file system driver for the Linux kernel. It provides support for the fourth extended file system (ext4), which is a widely used file system 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 in the ext4 package is related to the ext4_mb_use_inode_pa function. The function is responsible for determining whether to use the inode's physical address for block allocation. Due to a bug, the function may trigger a bug_on assertion failure, leading to a kernel panic. This vulnerability could be exploited by an attacker with local access to the system to cause a denial of service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet.
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. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
The ext4 package in the Linux Kernel has a vulnerability related to the ext4_mb_use_inode_pa function, which could lead to a kernel panic and denial of service (DoS) condition. It is crucial to update the Linux Kernel to version v5.4.200 or later to fix this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The ext4 package is a file system driver for the Linux kernel, providing support for the ext4 file system.
The vulnerability could be exploited by an attacker with local access to the system to cause a denial of service (DoS) condition.
To fix the vulnerability, update your Linux Kernel to version v5.4.200 or later.
There is no specific workaround mentioned for this vulnerability. Updating the Linux Kernel is the recommended solution.
For more information, you can refer to the vulnerability details in the Open Source Vulnerability format or the provided references link.
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