Fix trigger reference counting in iio: mma8452
Summary
GSD-2021-1002384: iio: mma8452: Fix trigger reference couting. Affects Kernel versions >= ae6d9ce05691bf79694074db7c7da980080548af, < fb75cc4740d81264cd5bcb0e17d961d018a8be96. No fix is published. How to fix ↓
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Background
The iio: mma8452 is a driver in the Linux Kernel that provides support for the MMA8452 accelerometer sensor. This sensor is commonly used in various devices to measure acceleration. The driver allows applications to interact with the sensor and retrieve acceleration data. However, a vulnerability has been discovered in the driver's trigger reference counting mechanism.
Vulnerability Detail
The vulnerability in the iio: mma8452 driver lies in its trigger reference counting implementation. Due to a coding error, the driver does not properly handle the reference counting of triggers, which can lead to use-after-free vulnerabilities. An attacker could exploit this vulnerability by triggering the use-after-free condition, potentially leading to arbitrary code execution or a system crash. The vulnerability was introduced in version v4.2 of the Linux Kernel and has been fixed in version v4.9.293.
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 recommended to apply the fix by updating the Linux Kernel.
Conclusion
The iio: mma8452 driver in the Linux Kernel is vulnerable to a trigger reference counting issue, which can lead to use-after-free vulnerabilities. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v4.9.293 or later. This update includes a fix for the trigger reference counting issue. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability in the iio: mma8452 driver could potentially allow an attacker to execute arbitrary code or crash the system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the playground will analyze it for vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
The only known mitigation for this vulnerability is to update the Linux Kernel to version v4.9.293 or later. Applying this update will patch the vulnerability and protect the system.
You can find more information about this vulnerability in the GSD-2021-1002384 JSON report available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002384.json
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