CVE-2022-50846

In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: 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().

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00
https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b
https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3
https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59
https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04
https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca
https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d
https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9
https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-30 13:15

Updated : 2026-06-17 05:24

NVD link : CVE-2022-50846

Mitre link : CVE-2022-50846

CVE.ORG link : CVE-2022-50846

JSON object : View

Products Affected

No product.

CWE

No CWE.

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The memory that allocated in mmc_alloc_host() is leaked.\n2. In the remove() path, mmc_remove_host() will be called to\n delete device, but it's not added yet, it will lead a kernel\n crash because of null-ptr-deref in device_del().\n\nFix this by checking the return value and goto error path which\nwill call mmc_free_host()."}], "lastModified": "2026-06-17T05:24:17.267", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}