Stack Out of Bound Access in elantech_change_report_id()
Summary
GSD-2021-1002829: Input: elantech - fix stack out of bound access in elantech_change_report_id(). Affects Kernel versions >= e4c9062717feda88900b566463228d1c4910af6d, < dfd5b60b5342b6b505a104e48f08ad9b9bdbbd7b. No fix is published. How to fix ↓
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Background
The elantech package is a part of the Linux Kernel ecosystem. It provides support for Elantech touchpads in Linux-based systems. Touchpads are input devices commonly found in laptops and other portable devices, allowing users to control the cursor and perform various gestures. The elantech package enables the proper functioning of Elantech touchpads by implementing the necessary drivers and functionalities.
Vulnerability Detail
The vulnerability identified as GSD-2021-1002829 is a stack out of bound access issue in the elantech_change_report_id() function. This vulnerability was introduced in version v5.11 of the Linux Kernel and was fixed in version v5.15.12. The exact impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, it could potentially lead to unauthorized access, privilege escalation, or denial of service attacks. The vulnerability arises due to a stack out of bound access in the elantech_change_report_id() function, which can be triggered by a specially crafted input. This could allow an attacker to overwrite adjacent memory locations and potentially execute arbitrary code or crash the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can consider disabling or disconnecting Elantech touchpads if they are not essential for their system's operation. This can help mitigate the risk of potential exploitation until the kernel update is applied.
Conclusion
In conclusion, the elantech package in the Linux Kernel is vulnerable to a stack out of bound access issue in the elantech_change_report_id() function. This vulnerability can potentially lead to unauthorized access, privilege escalation, or denial of service attacks. It is crucial to update the Linux Kernel to version v5.15.12 or later to mitigate this vulnerability. Disabling or disconnecting Elantech touchpads can serve as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The elantech package is a component of the Linux Kernel ecosystem that provides support for Elantech touchpads in Linux-based systems.
The impact of this vulnerability is not yet proven, but if exploited, it could lead to unauthorized access, privilege escalation, or denial of service attacks.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.12 or later by obtaining the necessary changes from the official Linux Kernel repository.
Yes, users can consider disabling or disconnecting Elantech touchpads as a temporary workaround until the kernel update is applied.
You can find more information about this vulnerability in the GSD-2021-1002829 entry of the GSD database maintained by the Cloud Security Alliance. The source link is provided in the vulnerability details.
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