Hi Hui, On Fri, Aug 30, 2019 at 05:47:29PM -0400, Hui Peng wrote: > `check_input_term` recursively calls itself with input from > device side (e.g., uac_input_terminal_descriptor.bCSourceID) > as argument (id). In `check_input_term`, if `check_input_term` > is called with the same `id` argument as the caller, it triggers > endless recursive call, resulting kernel space stack overflow. > > This patch fixes the bug by adding a bitmap to `struct mixer_build` > to keep track of the checked ids and stop the execution if some id > has been checked (similar to how parse_audio_unit handles unitid > argument). > > CVE: CVE-2018-15118 Similar to the previous one, this should be CVE-2019-15118 as far I can tell. Regards, Salvatore
