Vulnerability in Kernel: mtd: rawnand: fsmc: Fix timing computation
Summary
GSD-2021-1002514: mtd: rawnand: fsmc: Fix timing computation. Affects Kernel versions >= d9fb0795718333e36f7e472d7d81b7b8efe347c8, < 347cc9b4d9662aebc3aa7a12c12f0c8c091d1db9. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionalities and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and ensures the stability and security of the system. The vulnerability in question affects the mtd (Memory Technology Devices) subsystem, specifically the rawnand (raw NAND flash) driver using the fsmc (Flexible Static Memory Controller) interface. This driver is responsible for handling NAND flash memory devices connected via the FSMC interface. The vulnerability arises from an incorrect timing computation in the driver, which can lead to potential security risks.
Vulnerability Detail
The vulnerability in the mtd rawnand fsmc driver arises from a flaw in the timing computation. This flaw can result in incorrect timing values being used during the communication with NAND flash memory devices connected via the FSMC interface. As a consequence, the timing requirements of the NAND flash memory may not be met, leading to potential data corruption or other security issues. An attacker could potentially exploit this vulnerability to manipulate data stored in the NAND flash memory or disrupt the normal functioning of the system. The vulnerability was introduced in version v4.13 of the Linux Kernel and has been fixed in version v5.10.85.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the mtd rawnand fsmc driver of the Linux Kernel can lead to potential data corruption and security issues in systems using NAND flash memory devices connected via the FSMC interface. It is crucial to update the Kernel to version v5.10.85 or later to mitigate the risk associated with this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to data corruption or other security issues in systems using NAND flash memory devices connected via the FSMC interface. An attacker could exploit this vulnerability to manipulate data or disrupt the normal functioning of 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 to the playground, and it will analyze the dependencies and alert you if any vulnerabilities, including this one, are found.
At the moment, there are no known workarounds for this vulnerability. It is recommended to update the Linux Kernel to the fixed version (v5.10.85 or later) to mitigate the risk.
No, this vulnerability is not specific to a particular hardware configuration. It affects systems using NAND flash memory devices connected via the FSMC interface.
The vulnerability was discovered by an automated analysis tool and reported in the Open Source Vulnerability format. The actual impact and attack plausibility have not yet been proven.
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