CVE-2022-50618
Published Dec 8, 2025
Modified Apr 15, 2026
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().
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References
Other 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
Frequently Asked Questions
What is CVE-2022-50618? +
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().
How do I check if I'm vulnerable to CVE-2022-50618? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.