Vulnerability in Kernel: mmc: host: Return an error when ->enable_sdio_irq() ops is missing
Summary
GSD-2022-1002212: mmc: host: Return an error when ->enable_sdio_irq() ops is missing. Affects Kernel versions < 95d65bca6eb9967aa5f6ed7a32e041b4f11ffbc2. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The mmc (MultiMediaCard) subsystem within the Kernel is responsible for handling SD (Secure Digital) and eMMC (embedded MultiMediaCard) devices. It provides support for various operations, including enabling SDIO (Secure Digital Input Output) interrupts. SDIO interrupts are used for communication between SDIO devices and the host system. However, a vulnerability has been identified in the mmc host driver, specifically in the ->enable_sdio_irq() operation. This vulnerability can lead to potential security risks if the operation is missing or not implemented correctly.
Vulnerability Detail
The vulnerability in the mmc host driver occurs when the ->enable_sdio_irq() operation is missing. This operation is responsible for enabling SDIO interrupts, which are crucial for communication between SDIO devices and the host system. If this operation is not implemented or missing, it can result in the inability to properly handle SDIO interrupts. This can lead to various issues, including potential data corruption, device malfunction, or even security vulnerabilities. Attackers may exploit this vulnerability to disrupt the communication between SDIO devices and the host system, potentially leading to unauthorized access or data manipulation. It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the vulnerability in the Kernel's mmc host driver, specifically in the ->enable_sdio_irq() operation, can pose potential security risks if not addressed. It is crucial to update the Linux Kernel to version v5.4.189 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary, but it may result in data corruption, device malfunction, or potential security risks if exploited by attackers.
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 are no known exploits for this vulnerability. However, it is important to update the Kernel to the latest version to mitigate any potential risks.
Yes, a patch has been released in commit 95d65bca6eb9967aa5f6ed7a32e041b4f11ffbc2 of the Linux Kernel. Updating to version v5.4.189 or later will include the necessary fix.
You can find more information about this vulnerability in the GSD-2022-1002212 JSON file available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002212.json
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