ALSA: Compress - add codec parameter checks

Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 11 insertions, 0 deletions

diff --git a/include/sound/compress_params.h b/include/sound/compress_params.h
index da4a456de032..602dc6c45d1a 100644
--- a/include/sound/compress_params.h
+++ b/include/sound/compress_params.h
@@ -72,6 +72,7 @@
 #define SND_AUDIOCODEC_IEC61937              ((__u32) 0x0000000B)
 #define SND_AUDIOCODEC_G723_1                ((__u32) 0x0000000C)
 #define SND_AUDIOCODEC_G729                  ((__u32) 0x0000000D)
+#define SND_AUDIOCODEC_MAX                   SND_AUDIOCODEC_G729
 
 /*
  * Profile and modes are listed with bit masks. This allows for a
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index bd7f28e89254..c40ae573346d 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -432,6 +432,16 @@ static int snd_compress_check_input(struct snd_compr_params *params)
                         params->buffer.fragments > SIZE_MAX / params->buffer.fragment_size)
                 return -EINVAL;
 
+        /* now codec parameters */
+        if (params->codec.id == 0 || params->codec.id > SND_AUDIOCODEC_MAX)
+                return -EINVAL;
+
+        if (params->codec.ch_in == 0 || params->codec.ch_out == 0)
+                return -EINVAL;
+
+        if (!(params->codec.sample_rate & SNDRV_PCM_RATE_8000_192000))
+                return -EINVAL;
+
         return 0;
 }