From e5a134739151594ef0981dce63b655cb5c912b74 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Fri, 24 Feb 2017 11:48:41 +0900 Subject: ASoC: Intel: Skylake: fix invalid memory access due to wrong reference of pointer commit d1a6fe41d3c4ff0d26f0b186d774493555ca5282 upstream. In 'skl_tplg_set_module_init_data()', a pointer to 'params' member of 'struct skl_algo_data' is calculated, then casted to (u32 *) and assigned to a member of configuration data. The configuration data is passed to the other functions and used to process intel IPC. In this processing, the value of member is used to get message data, however this can bring invalid memory access in 'skl_set_module_params()' as a result of calculation of a pointer for actual message data. (sound/soc/intel/skylake/skl-topology.c) skl_tplg_init_pipe_modules() ->skl_tplg_set_module_init_data() (has this bug) ->skl_tplg_set_module_params() (sound/soc/intel/skylake/skl-messages.c) ->skl_set_module_params() ((char *)param) + data_offset This commit fixes the bug. Fixes: abb740033b56 ("ASoC: Intel: Skylake: Add support to configure module params") Signed-off-by: Takashi Sakamoto Acked-by: Vinod Koul Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c index b5b1934..bef8a45 100644 --- a/sound/soc/intel/skylake/skl-topology.c +++ b/sound/soc/intel/skylake/skl-topology.c @@ -448,7 +448,7 @@ static int skl_tplg_set_module_init_data(struct snd_soc_dapm_widget *w) if (bc->set_params != SKL_PARAM_INIT) continue; - mconfig->formats_config.caps = (u32 *)&bc->params; + mconfig->formats_config.caps = (u32 *)bc->params; mconfig->formats_config.caps_size = bc->size; break; -- cgit v0.10.2