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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-04 11:15:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-04 11:15:59 -0700 |
| commit | d9f73afcd364eb02b355921f6101db9e7ee4001c (patch) | |
| tree | 43870615470ed12414fa9b3fcc1f249fc1fd36c4 /sound/core/control.c | |
| parent | 53d22d886a13b9f6309c3333be55bd71d621eb8d (diff) | |
| parent | e913b146493993c8ac33561655c590e58b500c6f (diff) | |
| download | op-kernel-dev-d9f73afcd364eb02b355921f6101db9e7ee4001c.zip op-kernel-dev-d9f73afcd364eb02b355921f6101db9e7ee4001c.tar.gz | |
Merge branch 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'fix/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: i2c/other/ak4xx-adda: Fix a compile warning with CONFIG_PROCFS=n
ALSA: prevent heap corruption in snd_ctl_new()
Diffstat (limited to 'sound/core/control.c')
| -rw-r--r-- | sound/core/control.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/core/control.c b/sound/core/control.c index 070aab4..45a8180 100644 --- a/sound/core/control.c +++ b/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 */ @@ -195,6 +196,10 @@ static struct snd_kcontrol *snd_ctl_new(struct snd_kcontrol *control, 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"); |
