What’s Vulnerable › Vulnerabilities

CVE-2022-50618: mmc: meson-gx: fix return value check of mmc_add_host()

• 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: 2025-12-08 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: meson-gx: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). Fix this by checking the return value and goto error path which will call mmc_free_host().

Affected products

• Linux kernel: 4.10 — fixed in 6.2

How to fix

Upgrade to a fixed version: Linux kernel 6.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/42343e3c6195e934b9cb4c08b7ff84a3778d77f9
• https://git.kernel.org/stable/c/64b2c441171febf075bd9632aca579afda8ab9fb
• https://git.kernel.org/stable/c/90935f16f2650ab7416fa2ffbe5c28cb39cf3f1e
• https://git.kernel.org/stable/c/9e11c6bb745be4e9b325cf96031b4ea34801342d
• https://git.kernel.org/stable/c/e0cfe7aa41f3965f5224affd88afd48c60f6ad1f
• https://git.kernel.org/stable/c/f5506e0bbb25102bd8ef2e1a3b483a0b934e454e
• https://git.kernel.org/stable/c/f5ce76aeddf01ca8f2a80fc37119388d59db7c10

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