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-2022-1002333: mmc: host: Return an error when ->enable_sdio_irq() ops is missing. Affects Kernel versions < 63535a20f4f3c54f60c6ea27eebac09262d3ce77. 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 handles communication with SD (Secure Digital) and MMC (MultiMediaCard) devices, such as memory cards. The mmc host is responsible for managing the communication between the host system and the SD/MMC device. However, a vulnerability has been identified in the mmc host where an error is not returned when the ->enable_sdio_irq() operation is missing.

Vulnerability Detail

The vulnerability in the mmc host occurs when the ->enable_sdio_irq() operation is not implemented. This can lead to potential security risks as the system may not properly handle SDIO (Secure Digital Input Output) interrupts. Attackers could exploit this vulnerability to gain unauthorized access, execute arbitrary code, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v4.19.238 by commit 63535a20f4f3c54f60c6ea27eebac09262d3ce77.

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 can pose security risks if the ->enable_sdio_irq() operation is missing. It is crucial to update the Linux Kernel to version v4.19.238 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for Kernel →