diff options
| author | Christian Engelmayer <cengelma@gmx.at> | 2015-02-07 22:40:52 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-02-08 03:08:27 (GMT) |
| commit | 279e17ae81c17b40ae7a6c9e10f386a7aac7aa55 (patch) | |
| tree | 1c4726682f64ce4c3226e7b177ab5c1dde8b78a7 /sound | |
| parent | 5c2b06369dafd796ebb4f17dab543d3da500245e (diff) | |
| download | linux-279e17ae81c17b40ae7a6c9e10f386a7aac7aa55.tar.xz | |
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 <cengelma@gmx.at>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/intel/sst/sst.h | 3 | ||||
| -rw-r--r-- | 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 7f4bbfc..562bc48 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 b336013..51f83ba 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; }; |