Vulnerability in Kernel package: sfc: farch: fix TX queue lookup in TX flush done handling
Summary
GSD-2021-1000104: sfc: farch: fix TX queue lookup in TX flush done handling. Affects Kernel versions >= 12804793b17c0e19115a90d98f2f3df0cb79e233, < a1570985ec04116cc665b760faf666a104154170. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It plays a crucial role in ensuring the stability and security of the system. The specific vulnerability in focus relates to the sfc (Solarflare Ethernet Controller) module within the Kernel package. The vulnerability affects the TX queue lookup in the TX flush done handling process.
Vulnerability Detail
The vulnerability arises from a flaw in the TX queue lookup mechanism during the TX flush done handling in the sfc module. This flaw could potentially be exploited by an attacker to manipulate the TX queue lookup process, leading to various security issues. 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 the Linux Kernel version v5.11.20 by commit a1570985ec04116cc665b760faf666a104154170. However, it was introduced in version v5.10 by commit 12804793b17c0e19115a90d98f2f3df0cb79e233.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel package, specifically in the sfc module's TX queue lookup during TX flush done handling, has the potential to pose security risks. It is crucial to update the Linux Kernel to version v5.11.20 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the attack plausibility has not been proven. However, if successfully exploited, it could lead to security issues within the affected system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will provide real-time alerts for open-source vulnerabilities.
Yes, a patch has been released in the Linux Kernel version v5.11.20. It is recommended to update to this version or later to mitigate the vulnerability.
No specific temporary measures have been mentioned for this vulnerability. It is advisable to prioritize updating the Kernel to the fixed version as soon as possible.
You can refer to the vulnerability details in the GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000104.json) for more information about this vulnerability.
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