Vulnerability in liquidio Package: Fix unintented sign extension of a left shift of a u16
Summary
GSD-2021-1000258: liquidio: Fix unintented sign extension of a left shift of a u16. Affects Kernel versions >= 5bc67f587ba7eaa8dd3976bfeff8f2b60718c871, < 769003fd970c05a2ad21fee5429dd5a49feefd09. No fix is published. How to fix ↓
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Background
The liquidio package is a component of the Linux Kernel ecosystem. It provides support for Cavium LiquidIO Intelligent Server Adapters, which are high-performance network interface cards. These adapters are used to accelerate network and security functions in data centers. The vulnerability in the liquidio package involves an unintended sign extension of a left shift operation on a 16-bit unsigned integer (u16).
Vulnerability Detail
The vulnerability arises from a sign extension issue in the liquidio package. When performing a left shift operation on a u16 value, the resulting value is unintentionally sign-extended to a larger data type. This can lead to unexpected behavior and potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v4.9 of the Linux Kernel and has been fixed in version v5.12.4.
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 liquidio package in the Linux Kernel is vulnerable to an unintended sign extension issue during a left shift operation on a u16 value. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.12.4 or later. This update includes the necessary fix for the sign extension issue. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown. It is important to update the Linux Kernel to the fixed version to mitigate any potential security risks.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
There is no known exploit for this vulnerability at the moment. However, it is still recommended to update the Linux Kernel to the fixed version as a precautionary measure.
While there is no specific workaround mentioned for this vulnerability, it is generally recommended to follow security best practices such as network segmentation, access control, and monitoring to minimize potential risks.
You can find more information about this vulnerability in the GSD-2021-1000258 JSON file available on the GitHub repository of the Cloud Security Alliance's GSD Database (https://github.com/cloudsecurityalliance/gsd-database).
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