Vulnerability in Kernel: vt_ioctl: fix array_index_nospec in vt_setactivate
Summary
GSD-2022-1000291: vt_ioctl: fix array_index_nospec in vt_setactivate. Affects Kernel versions < 830c5aa302ec16b4ee641aec769462c37f802c90. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. One of its components, vt_ioctl, handles input/output control operations for virtual terminals. However, a vulnerability has been discovered in the vt_ioctl function, specifically in the vt_setactivate subroutine.
Vulnerability Detail
The vulnerability in vt_ioctl arises from a lack of proper array_index_nospec usage in the vt_setactivate subroutine. This vulnerability could potentially be exploited by an attacker to gain unauthorized access or execute arbitrary code on the affected system. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been addressed in the Linux Kernel version v4.9.302 by commit 830c5aa302ec16b4ee641aec769462c37f802c90.
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
In conclusion, a vulnerability has been identified in the Kernel's vt_ioctl function, specifically in the vt_setactivate subroutine. This vulnerability could potentially allow unauthorized access or arbitrary code execution. It is crucial to update the Linux Kernel to version v4.9.302 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could lead to unauthorized access or arbitrary code execution on 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 the Vulert Playground will provide real-time alerts for open-source vulnerabilities, including this one.
Yes, a patch for this vulnerability is available in the Linux Kernel version v4.9.302. It is recommended to update to this version or a later one to mitigate the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. However, it is always advisable to apply security patches and updates to minimize the risk of remote exploitation.
You can find more information about this vulnerability in the GSD database entry: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000291.json
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