What’s Vulnerable › Vulnerabilities

CVE-2022-50640: mmc: core: Fix kernel panic when remove non-standard SDIO card

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-09 · updated 2026-06-17

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().

Affected products

• Linux kernel: 2.6.36 — fixed in 6.1

How to fix

Upgrade to a fixed version: Linux kernel 6.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1e8cd93ae536581562bab4e1d8c5315bbc2548bf
• https://git.kernel.org/stable/c/1fb79478695d92bab1c120ad3dad05252b02a29d
• https://git.kernel.org/stable/c/66d461a92f32b6995b630625d350259b6b1f961b
• https://git.kernel.org/stable/c/7a09c64b7da0abdec3919812e3d93ecc44069ed0
• https://git.kernel.org/stable/c/8bf037279b5869ae9331c42bb1527d2680ebba96
• https://git.kernel.org/stable/c/9972e6b404884adae9eec7463e30d9b3c9a70b18
• https://git.kernel.org/stable/c/b3275dde570b6420106a715bb58a0af041b94d95
• https://git.kernel.org/stable/c/b8b2965932e702b21e335ff30e1bb550f5a23b6f

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