Vulnerability in Kernel: mmc: host: Return an error when ->enable_sdio_irq() ops is missing

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1002038: mmc: host: Return an error when ->enable_sdio_irq() ops is missing. Affects Kernel versions < 2412a5d29411d404698a15cd2f2b965afd57acd6. No fix is published. How to fix ↓

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Background

The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. The mmc (MultiMediaCard) subsystem within the Kernel handles communication with SD (Secure Digital) and MMC (MultiMediaCard) devices, such as memory cards and SDIO (Secure Digital Input Output) devices. This vulnerability specifically affects the mmc host, which is responsible for managing the communication between the host system and the SD/MMC devices.

Vulnerability Detail

The vulnerability arises when the ->enable_sdio_irq() operation is missing in the mmc host implementation. This operation is responsible for enabling the SDIO interrupt request (IRQ) line, which allows the host to receive interrupts from SDIO devices. Without this operation, the host fails to properly handle SDIO interrupts, leading to potential issues and security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the integrity and security of the system.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.110 or later. The fix for this vulnerability was implemented in commit 2412a5d29411d404698a15cd2f2b965afd57acd6. By updating to the latest version of the Kernel, the missing ->enable_sdio_irq() operation will be included, ensuring proper handling of SDIO interrupts.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, applying the recommended fix by updating the Kernel to the latest version should address the issue.

Conclusion

In conclusion, the vulnerability in the Kernel's mmc host, specifically related to the missing ->enable_sdio_irq() operation, can lead to potential issues and security vulnerabilities. It is crucial to update the Linux Kernel to version v5.10.110 or later to address this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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