In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]mfd: pcf50633-adc: Fix potential memleak in pcf50633_adc_async_read()[EOL][EOL]`req` is allocated in pcf50633_adc_async_read(), but[EOL]adc_enqueue_request() could fail to insert the `req` into queue.[EOL]We need to check the return value and free it in the case of failure.
