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-rw-r--r--sound/core/hwdep.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c
index a73baa1242be..8faae3d1455d 100644
--- a/sound/core/hwdep.c
+++ b/sound/core/hwdep.c
@@ -228,6 +228,8 @@ static int snd_hwdep_dsp_load(struct snd_hwdep *hw,
memset(&info, 0, sizeof(info));
if (copy_from_user(&info, _info, sizeof(info)))
return -EFAULT;
+ if (info.index >= 32)
+ return -EINVAL;
/* check whether the dsp was already loaded */
if (hw->dsp_loaded & (1 << info.index))
return -EBUSY;