--- sound/core/control.c

+++ sound/core/control.c

@@ -31,6 +31,7 @@

/* max number of user-defined controls */

#define MAX_USER_CONTROLS 32

+#define MAX_CONTROL_COUNT 1028

struct snd_kctl_ioctl {

struct list_head list; /* list of all ioctls */

@@ -190,6 +191,10 @@ static struct snd_kcontrol *snd_ctl_new(

if (snd_BUG_ON(!control || !control->count))

return NULL;

+

+ if (control->count > MAX_CONTROL_COUNT)

+ return NULL;

+

kctl = kzalloc(sizeof(*kctl) + sizeof(struct snd_kcontrol_volatile) * control->count, GFP_KERNEL);

if (kctl == NULL) {

snd_printk(KERN_ERR "Cannot allocate control instance\n");