Fix ordering in queued_write_lock_slowpath() vulnerability in Kernel
Summary
GSD-2021-1000048: locking/qrwlock: Fix ordering in queued_write_lock_slowpath(). Affects Kernel versions >= b519b56e378ee82caf9b079b04f5db87dedc3251, < 5902f9453a313be8fe78cbd7e7ca9dba9319fc6e. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that provides core functionalities and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers. The vulnerability in question affects the locking/qrwlock module within the Kernel.
Vulnerability Detail
The vulnerability, identified as GSD-2021-1000048, originates from a flaw in the queued_write_lock_slowpath() function of the locking/qrwlock module. The issue was introduced in version v4.15 of the Linux Kernel by commit b519b56e378ee82caf9b079b04f5db87dedc3251 and was fixed in version v4.19.189 by commit 5902f9453a313be8fe78cbd7e7ca9dba9319fc6e. The vulnerability could potentially be exploited to cause unintended behavior or security breaches. However, the actual impact and attack plausibility have not been proven yet.
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 Fix ordering in queued_write_lock_slowpath() vulnerability in the Kernel affects the locking/qrwlock module. It is recommended to update the Linux Kernel to version v4.19.189 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, it could potentially lead to unintended behavior or security breaches.
This vulnerability was introduced in version v4.15 of the Linux Kernel by commit b519b56e378ee82caf9b079b04f5db87dedc3251.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will alert you in real-time if any open-source vulnerabilities, including this one, are detected.
No specific workaround has been provided 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 GSD-2021-1000048 JSON file available on the GitHub repository of the Cloud Security Alliance's GSD database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000048.json
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