CVE-2022-50251

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mmc: vub300: fix return value check of mmc_add_host()<br /> <br /> mmc_add_host() may return error, if we ignore its return value, the memory<br /> that allocated in mmc_alloc_host() will be leaked and it will lead a kernel<br /> crash because of deleting not added device in the remove path.<br /> <br /> So fix this by checking the return value and goto error path which will call<br /> mmc_free_host(), besides, the timer added before mmc_add_host() needs be del.<br /> <br /> And this patch fixes another missing call mmc_free_host() if usb_control_msg()<br /> fails.