What’s Vulnerable › Vulnerabilities

CVE-2022-50769: mmc: mxcmmc: fix return value check of mmc_add_host()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: mxcmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and goto error path which will call mmc_free_host().

Affected products

• Linux kernel: 2.6.29 — 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/1cf0c1e58738b97e2de207846105b6a5d46622ee
• https://git.kernel.org/stable/c/2d496050ded83b13b16f05e1fc0329b0210d2493
• https://git.kernel.org/stable/c/32eb502c972dfc34413c9147418b3d94d870c2b8
• https://git.kernel.org/stable/c/3904eb97bb78fdca3e16d30a38ce5697b9686110
• https://git.kernel.org/stable/c/5f35c038c9f4d258b3cf77885a2730f1417d63e7
• https://git.kernel.org/stable/c/b8bdb3fd13d5cd1e86d22fd3f803a742fd88af89
• https://git.kernel.org/stable/c/cde600af7b413c9fe03e85c58c4279df90e91d13
• https://git.kernel.org/stable/c/d2ead18bc7cc166220cab5a744a05c5b69431a12
• https://git.kernel.org/stable/c/d37474ab9a79149075f0823315c6d45dd983a78c

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