CVE-2022-50640
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BaseFortify

Publication date: 2025-12-09

Last updated on: 2025-12-09

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: mmc: core: Fix kernel panic when remove non-standard SDIO card SDIO tuple is only allocated for standard SDIO card, especially it causes memory corruption issues when the non-standard SDIO card has removed, which is because the card device's reference counter does not increase for it at sdio_init_func(), but all SDIO card device reference counter gets decreased at sdio_release_func().

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Meta Information

Published
2025-12-09
Last Modified
2025-12-09
Generated
2026-07-06
AI Q&A
2025-12-09
EPSS Evaluated
2026-07-05
NVD
CVE-2022-50640
EUVD
EUVD-2022-55716

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability occurs in the Linux kernel's MMC core when a non-standard SDIO card is removed. The issue arises because the SDIO tuple is only allocated for standard SDIO cards, and the reference counter for the non-standard SDIO card device is not increased during initialization. However, the reference counter is decreased upon removal, leading to memory corruption and potentially causing a kernel panic.

Impact Analysis

This vulnerability can cause the Linux kernel to panic when a non-standard SDIO card is removed, which may lead to system crashes or instability. This can disrupt normal operations and potentially cause data loss or downtime.

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