Vulnerability in ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed
Summary
GSD-2021-1000715: ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed. Affects Kernel versions < e33bafad30d34cfa5e9787cb099cab05e2677fcb. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
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 package that affects the ext4_es_cache_extent function, specifically when ext4_split_extent_at fails.
Vulnerability Detail
The vulnerability arises from a bug in the ext4_es_cache_extent function when ext4_split_extent_at fails. This bug can lead to potential security vulnerabilities, although the actual impact and attack plausibility have not been proven. The vulnerability was introduced in an unknown version of the Linux Kernel and has been fixed in version v4.4.272 by commit e33bafad30d34cfa5e9787cb099cab05e2677fcb. Further details can be found in the provided references link.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
No workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, a vulnerability has been discovered in the ext4 package that affects the ext4_es_cache_extent function. It is recommended to update the Linux Kernel to version v4.4.272 or later to fix this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
ext4 is a file system implementation for the Linux Kernel, providing support for the fourth extended file system (ext4). It offers improved performance, scalability, and reliability compared to its predecessors.
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, it is important to apply the fix to ensure the security and stability of the system.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
No workaround has been mentioned for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can find more information about this vulnerability in the provided references link.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
