diff --git a/sound/usb/format.c b/sound/usb/format.c
index 3bfead393aa346e86ccfe4fb05e7fd21e14bc8cd..91f0ed4a2e7eb16bcaf21cccc841a21dc7947a84 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -40,6 +40,8 @@ static u64 parse_audio_format_i_type(struct snd_usb_audio *chip,
 	case UAC_VERSION_1:
 	default: {
 		struct uac_format_type_i_discrete_descriptor *fmt = _fmt;
+		if (format >= 64)
+			return 0; /* invalid format */
 		sample_width = fmt->bBitResolution;
 		sample_bytes = fmt->bSubframeSize;
 		format = 1ULL << format;