diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index e77d8f561d1f..62dadee624fe 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1334,6 +1334,12 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
 	__u8 *bmaControls;
 
 	if (state->mixer->protocol == UAC_VERSION_1) {
+		if (hdr->bLength < 7) {
+			snd_printk(KERN_ERR
+				   "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
+				   unitid);
+			return -EINVAL;
+		}
 		csize = hdr->bControlSize;
 		if (!csize) {
 			snd_printdd(KERN_ERR "usbaudio: unit %u: "
@@ -1350,6 +1356,12 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
 		}
 	} else {
 		struct uac2_feature_unit_descriptor *ftr = _ftr;
+		if (hdr->bLength < 6) {
+			snd_printk(KERN_ERR
+				   "usbaudio: unit %u: invalid UAC_FEATURE_UNIT descriptor\n",
+				   unitid);
+			return -EINVAL;
+		}
 		csize = 4;
 		channels = (hdr->bLength - 6) / 4 - 1;
 		bmaControls = ftr->bmaControls;