diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/mixer.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index c22fa76e363..ee9aa087d8b 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1191,6 +1191,11 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void if (state->mixer->protocol == UAC_VERSION_1) { csize = hdr->bControlSize; + if (!csize) { + snd_printdd(KERN_ERR "usbaudio: unit %u: " + "invalid bControlSize == 0\n", unitid); + return -EINVAL; + } channels = (hdr->bLength - 7) / csize - 1; bmaControls = hdr->bmaControls; } else { |