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medium5.5

CVE-2022-50347

In the Linux kernel, the following vulnerability has been resolved: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return err…

Impact

In the Linux kernel, the following vulnerability has been resolved: mmc: rtsx_usb_sdmmc: 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 calling mmc_free_host() in the error path, besides, led_classdev_unregister() and pm_runtime_disable() also need be called.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.16 before 4.9.337
from 4.10 before 4.14.303
from 4.15 before 4.19.270
from 4.20 before 5.4.229
from 5.5 before 5.10.163
from 5.11 before 5.15.86

Weakness classification

CWE-476

References