[ALSA] vxpocket - Check value range in ctl callbacks

Check the value ranges in ctl put callbacks in vxpocket driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 48 insertions, 19 deletions

diff --git a/sound/drivers/vx/vx_mixer.c b/sound/drivers/vx/vx_mixer.c
index b8fcd79a7e11..a37f0a8f17af 100644
--- a/sound/drivers/vx/vx_mixer.c
+++ b/sound/drivers/vx/vx_mixer.c
@@ -439,14 +439,19 @@ static int vx_output_level_put(struct snd_kcontrol *kcontrol, struct snd_ctl_ele
 {
         struct vx_core *chip = snd_kcontrol_chip(kcontrol);
         int codec = kcontrol->id.index;
+        unsigned int val[2], vmax;
+
+        vmax = chip->hw->output_level_max;
+        val[0] = ucontrol->value.integer.value[0];
+        val[1] = ucontrol->value.integer.value[1];
+        if (val[0] > vmax || val[1] > vmax)
+                return -EINVAL;
         mutex_lock(&chip->mixer_mutex);
-        if (ucontrol->value.integer.value[0] != chip->output_level[codec][0] ||
-            ucontrol->value.integer.value[1] != chip->output_level[codec][1]) {
-                vx_set_analog_output_level(chip, codec,
-                                           ucontrol->value.integer.value[0],
-                                           ucontrol->value.integer.value[1]);
-                chip->output_level[codec][0] = ucontrol->value.integer.value[0];
-                chip->output_level[codec][1] = ucontrol->value.integer.value[1];
+        if (val[0] != chip->output_level[codec][0] ||
+            val[1] != chip->output_level[codec][1]) {
+                vx_set_analog_output_level(chip, codec, val[0], val[1]);
+                chip->output_level[codec][0] = val[0];
+                chip->output_level[codec][1] = val[1];
                 mutex_unlock(&chip->mixer_mutex);
                 return 1;
         }
@@ -506,6 +511,14 @@ static int vx_audio_src_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_v
 static int vx_audio_src_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 {
         struct vx_core *chip = snd_kcontrol_chip(kcontrol);
+
+        if (chip->type >= VX_TYPE_VXPOCKET) {
+                if (ucontrol->value.enumerated.item[0] > 2)
+                        return -EINVAL;
+        } else {
+                if (ucontrol->value.enumerated.item[0] > 1)
+                        return -EINVAL;
+        }
         mutex_lock(&chip->mixer_mutex);
         if (chip->audio_source_target != ucontrol->value.enumerated.item[0]) {
                 chip->audio_source_target = ucontrol->value.enumerated.item[0];
@@ -554,6 +567,9 @@ static int vx_clock_mode_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
 static int vx_clock_mode_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 {
         struct vx_core *chip = snd_kcontrol_chip(kcontrol);
+
+        if (ucontrol->value.enumerated.item[0] > 2)
+                return -EINVAL;
         mutex_lock(&chip->mixer_mutex);
         if (chip->clock_mode != ucontrol->value.enumerated.item[0]) {
                 chip->clock_mode = ucontrol->value.enumerated.item[0];
@@ -603,12 +619,17 @@ static int vx_audio_gain_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
         struct vx_core *chip = snd_kcontrol_chip(kcontrol);
         int audio = kcontrol->private_value & 0xff;
         int capture = (kcontrol->private_value >> 8) & 1;
+        unsigned int val[2];
 
+        val[0] = ucontrol->value.integer.value[0];
+        val[1] = ucontrol->value.integer.value[1];
+        if (val[0] > CVAL_MAX || val[1] > CVAL_MAX)
+                return -EINVAL;
         mutex_lock(&chip->mixer_mutex);
-        if (ucontrol->value.integer.value[0] != chip->audio_gain[capture][audio] ||
-            ucontrol->value.integer.value[1] != chip->audio_gain[capture][audio+1]) {
-                vx_set_audio_gain(chip, audio, capture, ucontrol->value.integer.value[0]);
-                vx_set_audio_gain(chip, audio+1, capture, ucontrol->value.integer.value[1]);
+        if (val[0] != chip->audio_gain[capture][audio] ||
+            val[1] != chip->audio_gain[capture][audio+1]) {
+                vx_set_audio_gain(chip, audio, capture, val[0]);
+                vx_set_audio_gain(chip, audio+1, capture, val[1]);
                 mutex_unlock(&chip->mixer_mutex);
                 return 1;
         }
@@ -632,13 +653,19 @@ static int vx_audio_monitor_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el
 {
         struct vx_core *chip = snd_kcontrol_chip(kcontrol);
         int audio = kcontrol->private_value & 0xff;
+        unsigned int val[2];
+
+        val[0] = ucontrol->value.integer.value[0];
+        val[1] = ucontrol->value.integer.value[1];
+        if (val[0] > CVAL_MAX || val[1] > CVAL_MAX)
+                return -EINVAL;
 
         mutex_lock(&chip->mixer_mutex);
-        if (ucontrol->value.integer.value[0] != chip->audio_monitor[audio] ||
-            ucontrol->value.integer.value[1] != chip->audio_monitor[audio+1]) {
-                vx_set_monitor_level(chip, audio, ucontrol->value.integer.value[0],
+        if (val[0] != chip->audio_monitor[audio] ||
+            val[1] != chip->audio_monitor[audio+1]) {
+                vx_set_monitor_level(chip, audio, val[0],
                                      chip->audio_monitor_active[audio]);
-                vx_set_monitor_level(chip, audio+1, ucontrol->value.integer.value[1],
+                vx_set_monitor_level(chip, audio+1, val[1],
                                      chip->audio_monitor_active[audio+1]);
                 mutex_unlock(&chip->mixer_mutex);
                 return 1;
@@ -669,8 +696,10 @@ static int vx_audio_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_va
         mutex_lock(&chip->mixer_mutex);
         if (ucontrol->value.integer.value[0] != chip->audio_active[audio] ||
             ucontrol->value.integer.value[1] != chip->audio_active[audio+1]) {
-                vx_set_audio_switch(chip, audio, ucontrol->value.integer.value[0]);
-                vx_set_audio_switch(chip, audio+1, ucontrol->value.integer.value[1]);
+                vx_set_audio_switch(chip, audio,
+                                    !!ucontrol->value.integer.value[0]);
+                vx_set_audio_switch(chip, audio+1,
+                                    !!ucontrol->value.integer.value[1]);
                 mutex_unlock(&chip->mixer_mutex);
                 return 1;
         }
@@ -699,9 +728,9 @@ static int vx_monitor_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
         if (ucontrol->value.integer.value[0] != chip->audio_monitor_active[audio] ||
             ucontrol->value.integer.value[1] != chip->audio_monitor_active[audio+1]) {
                 vx_set_monitor_level(chip, audio, chip->audio_monitor[audio],
-                                     ucontrol->value.integer.value[0]);
+                                     !!ucontrol->value.integer.value[0]);
                 vx_set_monitor_level(chip, audio+1, chip->audio_monitor[audio+1],
-                                     ucontrol->value.integer.value[1]);
+                                     !!ucontrol->value.integer.value[1]);
                 mutex_unlock(&chip->mixer_mutex);
                 return 1;
         }