From: Nicolai Krakowiak nicolai.krakowiak@gmail.com
Signed-off-by: Nicolai Krakowiak nicolai.krakowiak@gmail.com Acked-by: Daniel Mack zonque@gmail.com Cc: stable@kernel.org --- 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 d33a5a9..5ab345f 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 {