Vulnerability in Kernel: io-wq: drop wqe lock before creating new worker
Summary
GSD-2021-1002761: io-wq: drop wqe lock before creating new worker. Affects Kernel versions >= 4b4e5bbf9386d4ec21d91c0cb0fd60b9bba778ec, < 11053a021937aa403c883d3e8ef78d8c5308f583. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The io-wq module within the Kernel is responsible for handling input/output workqueues. Workqueues are used to schedule and execute tasks asynchronously. The vulnerability in question arises when the wqe lock is not released before creating a new worker. This can lead to potential security issues.
Vulnerability Detail
The vulnerability occurs in the io-wq module of the Kernel. When creating a new worker, the wqe lock is not dropped, which can result in security vulnerabilities. The exact impact and attack vectors are yet to be proven, but it is crucial to address this issue to prevent potential exploitation. The vulnerability was introduced in version v5.15.11 of the Linux Kernel by commit 4b4e5bbf9386d4ec21d91c0cb0fd60b9bba778ec. It has been fixed in version v5.15.11 by commit 11053a021937aa403c883d3e8ef78d8c5308f583.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.11 or later. This update includes the necessary fix committed in commit 11053a021937aa403c883d3e8ef78d8c5308f583. Updating the Kernel will ensure that the wqe lock is properly dropped before creating a new worker, mitigating the security risk.
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Conclusion
In conclusion, the vulnerability in the Kernel's io-wq module can lead to potential security issues. It is recommended to update the Linux Kernel to version v5.15.11 or later to address this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The exact impact of this vulnerability is yet to be proven. However, it has the potential to be exploited by malicious actors to gain unauthorized access or perform other malicious activities.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it in real-time to identify any open-source vulnerabilities, including this one.
At the moment, there are no known workarounds for this vulnerability. It is recommended to update the Linux Kernel to the fixed version as soon as possible.
There is no evidence to suggest that this vulnerability is actively being exploited at this time. However, it is crucial to apply the fix to prevent any potential exploitation.
You can find more information about this vulnerability in the GSD-2021-1002761 entry of the GSD database maintained by the Cloud Security Alliance. The link to the entry is available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002761.json.
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