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-rw-r--r--sound/core/control.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index bc64b723415b..a8b7fabe645e 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -436,6 +436,10 @@ static int snd_ctl_remove_user_ctl(struct snd_ctl_file * file,
ret = -ENOENT;
goto error;
}
+ if (!(kctl->vd[0].access & SNDRV_CTL_ELEM_ACCESS_USER)) {
+ ret = -EINVAL;
+ goto error;
+ }
for (idx = 0; idx < kctl->count; idx++)
if (kctl->vd[idx].owner != NULL && kctl->vd[idx].owner != file) {
ret = -EBUSY;