From 279e17ae81c17b40ae7a6c9e10f386a7aac7aa55 Mon Sep 17 00:00:00 2001 From: Christian Engelmayer Date: Sat, 7 Feb 2015 23:40:52 +0100 Subject: [PATCH] ASoC: Intel: sst: Fix firmware name size handling Function sst_acpi_probe() uses plain strcpy for setting member firmware_name of a struct intel_sst_drv from member firmware of a struct sst_machines. Thereby the destination array has got a length of 20 byte while the source may hold 32 byte. Since eg. commit 64b9c90b8600 ("ASoC: Intel: Fix BYTCR firmware name") increased strings from "fw_sst_0f28.bin" to "intel/fw_sst_0f28.bin" there is an actual possibility that the 20 byte array at the end of struct intel_sst_drv is overrun. Thus increase the size of the destination and use the same define for both structs. Detected by Coverity CID 1260087. Signed-off-by: Christian Engelmayer Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/intel/sst/sst.h | 3 ++- sound/soc/intel/sst/sst_acpi.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/sound/soc/intel/sst/sst.h b/sound/soc/intel/sst/sst.h index 7f4bbfcbc6f5..562bc483d6b7 100644 --- a/sound/soc/intel/sst/sst.h +++ b/sound/soc/intel/sst/sst.h @@ -58,6 +58,7 @@ enum sst_algo_ops { #define SST_BLOCK_TIMEOUT 1000 #define FW_SIGNATURE_SIZE 4 +#define FW_NAME_SIZE 32 /* stream states */ enum sst_stream_states { @@ -426,7 +427,7 @@ struct intel_sst_drv { * Holder for firmware name. Due to async call it needs to be * persistent till worker thread gets called */ - char firmware_name[20]; + char firmware_name[FW_NAME_SIZE]; }; /* misc definitions */ diff --git a/sound/soc/intel/sst/sst_acpi.c b/sound/soc/intel/sst/sst_acpi.c index b3360139c41a..51f83bad5319 100644 --- a/sound/soc/intel/sst/sst_acpi.c +++ b/sound/soc/intel/sst/sst_acpi.c @@ -47,7 +47,7 @@ struct sst_machines { char board[32]; char machine[32]; void (*machine_quirk)(void); - char firmware[32]; + char firmware[FW_NAME_SIZE]; struct sst_platform_info *pdata; };