ext4: Fix bug_on in ext4_writepages
Summary
GSD-2022-1002596: ext4: fix bug_on in ext4_writepages. Affects Kernel versions < 013f12bdedb96816aaa27ee04349f4433d361f52. 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_writepages function is responsible for writing dirty pages to disk. However, a bug in this function can lead to a bug_on assertion failure, potentially causing a denial of service or other security issues.
Vulnerability Detail
The vulnerability in ext4_writepages arises from a bug_on assertion that is triggered under certain conditions. This assertion failure can be exploited by an attacker to crash the system or potentially execute arbitrary code. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.18.3 by commit 013f12bdedb96816aaa27ee04349f4433d361f52.
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.
Conclusion
The ext4 package in the Linux Kernel is vulnerable to a bug_on assertion failure in the ext4_writepages function. This vulnerability can potentially lead to denial of service or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.18.3 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
ext4 is a file system implementation for the Linux kernel, providing support for the fourth extended file system (ext4). It is widely used in Linux distributions.
ext4_writepages is a function in the ext4 package responsible for writing dirty pages to disk.
The impact of this vulnerability includes potential denial of service or arbitrary code execution if exploited by an attacker.
Yes, this vulnerability has been fixed in Linux Kernel version v5.18.3 by commit 013f12bdedb96816aaa27ee04349f4433d361f52.
To fix this vulnerability, update the Linux Kernel to version v5.18.3 or later by applying the commit 013f12bdedb96816aaa27ee04349f4433d361f52.
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