Out-of-Bound Access in uclamp - Kernel
Summary
GSD-2021-1000206: sched: Fix out-of-bound access in uclamp. Affects Kernel versions >= 69842cba9ace84849bb9b8edcdf2cefccd97901c, < 42ee47c7e3569d9a0e2cb5053c496d97d380472f. 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 system resources and facilitates communication between hardware and software. It provides core functionalities and services to other software components. The uclamp feature in the Kernel allows users to control the CPU utilization of tasks. However, a vulnerability has been discovered in the uclamp implementation that can lead to out-of-bound access.
Vulnerability Detail
The vulnerability in the uclamp feature of the Kernel allows for out-of-bound access, potentially leading to a security breach. This vulnerability was introduced in version v5.3 of the Kernel and has been fixed in version v5.12.5. An attacker could exploit this vulnerability to gain unauthorized access, escalate privileges, or cause a denial-of-service (DoS) condition. The vulnerability arises from improper bounds checking in the uclamp implementation.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Kernel to the fixed version to mitigate the risk of exploitation.
Conclusion
The out-of-bound access vulnerability in the uclamp feature of the Kernel can pose significant security risks. It is crucial to update the Kernel to the fixed version v5.12.5 or later to mitigate the risk of exploitation. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially allow attackers to gain unauthorized access, escalate privileges, or cause a denial-of-service (DoS) condition.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. It analyzes the package-lock.json file to identify vulnerabilities in your software.
At the time of this report, there is no known exploit for this vulnerability. However, it is crucial to update the Kernel to the fixed version to prevent potential exploitation.
No, there is no known workaround for this vulnerability. Updating the Kernel to the fixed version is the recommended solution.
You can find more information about this vulnerability in the Cloud Security Alliance's GSD database: https://github.com/cloudsecurityalliance/gsd-database
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