Memory Corruption Vulnerability in iio: adc: tsc2046
Summary
GSD-2022-1000731: iio: adc: tsc2046: fix memory corruption by preventing array overflow. Affects Kernel versions >= 9374e8f5a38defe90bc65b2decf317c1c62d91dd, < 082d2c047b0d305bb0b6e9f9d671a09470e2db2d. No fix is published. How to fix ↓
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Background
The iio: adc: tsc2046 is a driver in the Linux Kernel that provides support for the Texas Instruments TSC2046 touchscreen controller. This driver allows users to interact with touchscreens connected to the system. The vulnerability in this driver can lead to memory corruption, potentially resulting in system instability or unauthorized access to sensitive information.
Vulnerability Detail
The vulnerability in the iio: adc: tsc2046 driver is caused by an array overflow. An attacker can exploit this vulnerability by providing specially crafted input, which can lead to memory corruption. This can result in various consequences, such as system crashes, privilege escalation, or the execution of arbitrary code. The vulnerability was introduced in Linux Kernel version v5.14 and was fixed in version v5.16.12 by commit 082d2c047b0d305bb0b6e9f9d671a09470e2db2d.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the Linux Kernel is not immediately possible, a possible workaround is to disable the iio: adc: tsc2046 driver if it is not required for the system's functionality. This can be done by blacklisting the driver module or removing it from the kernel configuration. However, this workaround may impact the functionality of touchscreens connected to the system.
Conclusion
The memory corruption vulnerability in the iio: adc: tsc2046 driver can have serious consequences, including system crashes and unauthorized access to sensitive information. It is crucial to update the Linux Kernel to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The vulnerability can lead to memory corruption, potentially resulting in system crashes, privilege escalation, or the execution of arbitrary code.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the necessary updates and security patches to mitigate the risk.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over a network. It is important to apply the recommended updates to protect against potential attacks.
The primary mitigation for this vulnerability is to update the Linux Kernel to the latest version. Additionally, disabling the iio: adc: tsc2046 driver if not required can serve as a temporary workaround.
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