3.0-stable review patch. If anyone has any objections, please let us know.
------------------
From: Nicolai Krakowiak <nicolai.krakow...@gmail.com>
commit 60c961a9e1ed879a4d151df6076bf1203f595f73 upstream.
Signed-off-by: Nicolai Krakowiak <nicolai.krakow...@gmail.com>
Acked-by: Daniel Mack <zon...@gmail.com>
Acked-by: Clemens Ladisch <clem...@ladisch.de>
Signed-off-by: Takashi Iwai <ti...@suse.de>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
sound/usb/mixer.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1191,6 +1191,11 @@ static int parse_audio_feature_unit(stru
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 {
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